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3-D printer. What to print?
I quite fancy, for a bit of fun, building one of these sub-£100 3-D
printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 My wife (I'm careful, she's mean) wants to know what use it is. Looking on the internet they mostly seem to be used to print improved parts for the 3-D printer so that, presumably, you can 3-D print even better parts. Needless to say this isn't going to work with my wife (I'm rational, she's awkward). Any suggestions? Another Dave -- Change nospam to techie |
3-D printer. What to print?
Another Dave wrote:
I quite fancy, for a bit of fun, building one of these sub-£100 3-D printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 First one looks a more rickety design that usual (only one support in each axis). My wife [...] wants to know what use it is. Surely a small pink spacerocket or some armour-plating for your cat, as per the advert, will be sufficient to win her over? |
3-D printer. What to print?
On 08/12/17 12:31, Andy Burns wrote:
Another Dave wrote: I quite fancy, for a bit of fun, building one of these sub-£100 3-D printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 First one looks a more rickety design that usual (only one support in each axis). Apparently not. It contains some metal rather than just acrylic. Besides, if it were perfect, I'd have no enhanced parts to print ... Another Dave -- Change nospam to techie |
3-D printer. What to print?
On Friday, 8 December 2017 12:21:22 UTC, Another Dave wrote:
I quite fancy, for a bit of fun, building one of these sub-£100 3-D printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 Personally I wouldn't waste my time with these, unless you want to print the lowest quality objects for putting in cheap christmas crackers. My wife (I'm careful, she's mean) wants to know what use it is. Ypu coud print spoons of differing shapes and sizes. But unless you're planing on desining yuor own objects I don't see much point in them. Looking on the internet they mostly seem to be used to print improved parts for the 3-D printer so that, presumably, you can 3-D print even better parts. Needless to say this isn't going to work with my wife (I'm rational, she's awkward). Does your wife need extra parts. I don't know if you can print off-the-shelve dildos. But if you can't think of what to print with them is there really any point.. ? |
3-D printer. What to print?
"Another Dave" wrote in message ... I quite fancy, for a bit of fun, building one of these sub-£100 3-D printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 My wife (I'm careful, she's mean) wants to know what use it is. Looking on the internet they mostly seem to be used to print improved parts for the 3-D printer so that, presumably, you can 3-D print even better parts. Needless to say this isn't going to work with my wife (I'm rational, she's awkward). Any suggestions? Grease the top step? |
3-D printer. What to print?
On 08/12/17 12:21, Another Dave wrote:
I quite fancy, for a bit of fun, building one of these sub-£100 3-D printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 My wife (I'm careful, she's mean) wants to know what use it is. Looking on the internet they mostly seem to be used to print improved parts for the 3-D printer so that, presumably, you can 3-D print even better parts. Needless to say this isn't going to work with my wife (I'm rational, she's awkward). Any suggestions? Another Dave Erm... I've just broken some 40 year old plastic door handles on a cupboard. Could print identical looking replacements. I need a spacer to raise the back of a turntable tonearm to match taller cartridges. I have an old fluke DMM with a broken slide switch. I have a casio music keyboard with a broken key. I've seen a screw on device that aerates water from the tap, reducing consumption when washing hands... .. .. New Christmas fairy for the top of the tree? -- Adrian C |
3-D printer. What to print?
whisky-dave wrote:
But if you can't think of what to print with them is there really any point. ? +1 Unless the op is already into other aspects of practical mechanical engineering, designing items for 3d printing will involve a steep learning curve in 3D CAD-CAM to feed the beast. They will need a good quality machine that accepts a range of different plastics to create reliable useful parts. Without this, the op will be reduced to copying published designs without the ability to change anything. After the first few runs, I can see the device collecting dust on the shelf. |
3-D printer. What to print?
Another Dave wrote:
I quite fancy, for a bit of fun, building one of these sub-£100 3-D printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 My wife (I'm careful, she's mean) wants to know what use it is. Looking on the internet they mostly seem to be used to print improved parts for the 3-D printer so that, presumably, you can 3-D print even better parts. Needless to say this isn't going to work with my wife (I'm rational, she's awkward). Any suggestions? Another Dave Get some Milliput, instead :-) |
3-D printer. What to print?
On Fri, 8 Dec 2017 14:10:50 +0000, Adrian Caspersz
wrote: snip Erm... I've just broken some 40 year old plastic door handles on a cupboard. Could print identical looking replacements. I need a spacer to raise the back of a turntable tonearm to match taller cartridges. I have an old fluke DMM with a broken slide switch. I have a casio music keyboard with a broken key. I've seen a screw on device that aerates water from the tap, reducing consumption when washing hands... Daughters ex has asked me if I could print some large chainsaw chain cutter models for show_and_tell for his class (he used to be able to buy them from Oregon). As has been mentioned elsewhere, I can do so easily, subject to the size required and the suitability to 3D printing etc but he would have to either get the 3D model file off them Oregon (if they have such and are willing etc) or get the vernier calipers out and Sketchup on a PC and get drawing. ;-) But the list of 'handy things' that I often couldn't just buy that I have printed is too long to mention. The last was some little plastic feet to allow daughter to raise her wooden pet rabbit hutch / run to stand just off the concrete to stop it sitting in water (and going rotten quickly) but low enough to not let sawdust and stuff to bow out. She's just bought a multi-panel steel framed run that comes powered coated but I fear will lose it's coating underneath (and go rusty etc) if dragged over the concrete. So, I intend to design and print some clip on feet, two per panel to both keep it just off the ground and therefore stop it getting damaged (like the concrete blocks you see on temporary fencing round building sites etc). It won't matter if the rabbits chew them as I generally use PLA and I believe that's made from corn starch or some such? The next job for the spring is to design and print a square mast foot for the folding / sailing dinghy and a matching mast step insert to help prevent the mast rotating under use / sail. The biggest thing I've designed and printed was a 90 Deg corner bracket to allow me to mount an outside light designed to go on a flat wall on the corner of a wall instead (and so lighting down both sides). I couldn't find a corner lamp fitting with the features I needed in the price range I wanted. Oh, and I printed all the plastic parts to build two more printers. ;-) Even after a couple of years using the 3D printer (after building it), I still get a buzz out of thinking of something in the morning and having it in my hand as a solid plastic object a couple of hours later. ;-) Cheers, T i m |
3-D printer. What to print?
In article ,
Adrian Caspersz wrote: On 08/12/17 12:21, Another Dave wrote: I quite fancy, for a bit of fun, building one of these sub-£100 3-D printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 My wife (I'm careful, she's mean) wants to know what use it is. Looking on the internet they mostly seem to be used to print improved parts for the 3-D printer so that, presumably, you can 3-D print even better parts. Needless to say this isn't going to work with my wife (I'm rational, she's awkward). Any suggestions? Another Dave Erm... I've just broken some 40 year old plastic door handles on a cupboard. Could print identical looking replacements. I need a spacer to raise the back of a turntable tonearm to match taller cartridges. I have an old fluke DMM with a broken slide switch. I have a casio music keyboard with a broken key. I've seen a screw on device that aerates water from the tap, reducing consumption when washing hands... My car club had some no longer available plastic brackets made up. Since they do break in time, fair to assume the originals only just adequate. The printed ones lasted five minutes in use. So I'd be wary of assuming something printed is as strong as a part made by traditional means, if identical dimensions. -- *Why do overlook and oversee mean opposite things? * Dave Plowman London SW To e-mail, change noise into sound. |
3-D printer. What to print?
On 08/12/2017 12:21, Another Dave wrote:
I quite fancy, for a bit of fun, building one of these sub-£100 3-D printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 My wife (I'm careful, she's mean) wants to know what use it is. Looking on the internet they mostly seem to be used to print improved parts for the 3-D printer so that, presumably, you can 3-D print even better parts. Needless to say this isn't going to work with my wife (I'm rational, she's awkward). Any suggestions? Another Dave Print your own Christmas fairy for the tree ?. Or for the impoverished people, download the Ken Bruce effigy from the BBC R2 website and use an entire ink cartridge to print it. |
3-D printer. What to print?
On 08/12/2017 12:21, Another Dave wrote:
I quite fancy, for a bit of fun, building one of these sub-£100 3-D printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 My wife (I'm careful, she's mean) wants to know what use it is. Looking on the internet they mostly seem to be used to print improved parts for the 3-D printer so that, presumably, you can 3-D print even better parts. Needless to say this isn't going to work with my wife (I'm rational, she's awkward). Any suggestions? try Thingverse and see if you can find something to suit. Ornaments? Jewellry moulds as lost plastic casting. https://www.thingiverse.com/ The first thing I got 3D printed was a digital sundial. Basically something you can only realistically make with 3D printing! -- Regards, Martin Brown |
3-D printer. What to print?
On Fri, 08 Dec 2017 14:57:55 +0000 (GMT), "Dave Plowman (News)"
wrote: snip So I'd be wary of assuming something printed is as strong as a part made by traditional means, if identical dimensions. But sometimes printed things can be (much) stronger than the things they are replacing. A neighbour has a big 'D cell' Maglight type torch and it came with a shoulder strap held onto the torch by two big plastic clamp / loops. He had one replaced under warranty and then the other one failed and he was quoted £15 inc to get a replacement. It was a simple design / print job so I made one from the dimensions and (broken) sample he gave., but it was a bit too small (his dimensions were out) so his son tried to break the replacement (as it was of no use). He is a big lad and only after quite a bit of bending and twisting was he able to break it and the replacements have been on the torch for nearly two years now with no sign of breaking. So, a few things come into play when considering printing 'replacement' items: 1) Is it easy to do with a straight 3D printer (without a dual extruder printer and 'lost' support filament etc)? 2) Are you using the most suitable plastic (eg, it can get very hot in a car in the summer and some of these filament materials have a fairly low melting point (and still soften below that))? 3) Is the printer setup and printing properly? 4) Are you printing the job with the printing 'grain' in mind re strength? On that last one, I have had print jobs fall apart because the extruder was too cold and the layers not bonding to each other etc. On the whole though, one of the things most people say when you show them a print job for the first time is 'how strong it is'. ;-) Cheers, T i m |
3-D printer. What to print?
On Friday, 8 December 2017 14:10:56 UTC, Adrian Caspersz wrote:
On 08/12/17 12:21, Another Dave wrote: I quite fancy, for a bit of fun, building one of these sub-£100 3-D printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 My wife (I'm careful, she's mean) wants to know what use it is. Looking on the internet they mostly seem to be used to print improved parts for the 3-D printer so that, presumably, you can 3-D print even better parts. Needless to say this isn't going to work with my wife (I'm rational, she's awkward). Any suggestions? Another Dave Erm... I've just broken some 40 year old plastic door handles on a cupboard. Could print identical looking replacements. Do you have any idea how much time and cost it will be to 'make' these handles ? I wouldn't bother I'd get some new handles. I need a spacer to raise the back of a turntable tonearm to match taller cartridges. I have an old fluke DMM with a broken slide switch. I have a casio music keyboard with a broken key. I've seen a screw on device that aerates water from the tap, reducing consumption when washing hands... That's what they all say it is ;-) But honestly I wouldn't bother. The time and effor envolved even if you do managed to be able to download the part. . . New Christmas fairy for the top of the tree? That is prooably the best reason for getting one, as long as you know that it;ll just be in one boring colour not very smooth, low detail and take 4 hours+ to print. But ti can be fun if you have nothjing to do for teh next few months but learn the design software and how to use it. It's a bit like making your own nuts and bolts. -- Adrian C |
3-D printer. What to print?
On Friday, 8 December 2017 15:13:54 UTC, Martin Brown wrote:
On 08/12/2017 12:21, Another Dave wrote: I quite fancy, for a bit of fun, building one of these sub-£100 3-D printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 My wife (I'm careful, she's mean) wants to know what use it is. Looking on the internet they mostly seem to be used to print improved parts for the 3-D printer so that, presumably, you can 3-D print even better parts. Needless to say this isn't going to work with my wife (I'm rational, she's awkward). Any suggestions? try Thingverse and see if you can find something to suit. Ornaments? Jewellry moulds as lost plastic casting. https://www.thingiverse.com/ The first thing I got 3D printed was a digital sundial. Basically something you can only realistically make with 3D printing! -- Regards, Martin Brown But yuo didnlt design it yourself did you. It's like getting a poster or painting done. You can buy a printer, capture the image from the website and print your own colour printer or go to anthena or other shop and buy a ready made poster.. |
3-D printer. What to print?
Yes you can do door handles and all sorts of other small things from what I
recall, but actually creating the 3D file it needs to do it is going to be the biggest challenge and possibly cost if you need to use some kind of 3D scanning system or laser hologram maker. Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! "Adrian Caspersz" wrote in message ... On 08/12/17 12:21, Another Dave wrote: I quite fancy, for a bit of fun, building one of these sub-£100 3-D printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 My wife (I'm careful, she's mean) wants to know what use it is. Looking on the internet they mostly seem to be used to print improved parts for the 3-D printer so that, presumably, you can 3-D print even better parts. Needless to say this isn't going to work with my wife (I'm rational, she's awkward). Any suggestions? Another Dave Erm... I've just broken some 40 year old plastic door handles on a cupboard. Could print identical looking replacements. I need a spacer to raise the back of a turntable tonearm to match taller cartridges. I have an old fluke DMM with a broken slide switch. I have a casio music keyboard with a broken key. I've seen a screw on device that aerates water from the tap, reducing consumption when washing hands... . . New Christmas fairy for the top of the tree? -- Adrian C |
3-D printer. What to print?
On Fri, 8 Dec 2017 16:36:47 -0000, "Brian Gaff"
wrote: I guess it depends how expensive the consumables are? About 15 quid for a 1kg roll of PLA filament. That will print about 1kg worth of objects and many can be made hollow (so use less material down to about 5%). Cheers, T i m |
3-D printer. What to print?
On 08/12/2017 12:21, Another Dave wrote:
I quite fancy, for a bit of fun, building one of these sub-£100 3-D printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 My wife (I'm careful, she's mean) wants to know what use it is. Looking on the internet they mostly seem to be used to print improved parts for the 3-D printer so that, presumably, you can 3-D print even better parts. Needless to say this isn't going to work with my wife (I'm rational, she's awkward). Any suggestions? Another Dave I have been printing models for N scale railways. The first world war tanks go like hotcakes. Recently started doing mkIV with retractable sponsons so they are as they were railed to the front. I had to cut up a thingiverese model using fusion 360 to make them. |
3-D printer. What to print?
On 08/12/2017 14:57, Dave Plowman (News) wrote:
In article , Adrian Caspersz wrote: On 08/12/17 12:21, Another Dave wrote: I quite fancy, for a bit of fun, building one of these sub-£100 3-D printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 My wife (I'm careful, she's mean) wants to know what use it is. Looking on the internet they mostly seem to be used to print improved parts for the 3-D printer so that, presumably, you can 3-D print even better parts. Needless to say this isn't going to work with my wife (I'm rational, she's awkward). Any suggestions? Another Dave Erm... I've just broken some 40 year old plastic door handles on a cupboard. Could print identical looking replacements. I need a spacer to raise the back of a turntable tonearm to match taller cartridges. I have an old fluke DMM with a broken slide switch. I have a casio music keyboard with a broken key. I've seen a screw on device that aerates water from the tap, reducing consumption when washing hands... My car club had some no longer available plastic brackets made up. Since they do break in time, fair to assume the originals only just adequate. The printed ones lasted five minutes in use. So I'd be wary of assuming something printed is as strong as a part made by traditional means, if identical dimensions. Print the part.. make a silicon mould.. cast the part with glass filled epoxy.. job done. |
3-D printer. What to print?
On Friday, 8 December 2017 16:53:10 UTC, T i m wrote:
On Fri, 8 Dec 2017 16:36:47 -0000, "Brian Gaff" wrote: I guess it depends how expensive the consumables are? About 15 quid for a 1kg roll of PLA filament. That will print about 1kg worth of objects and many can be made hollow (so use less material down to about 5%). Cheers, T i m Just whats neede hollow stuff, to fix parts that are broken. This is one of teh problems with 3D printing your own spares the plastic genrallly speaking just insn't the quality required for fixing much other than replacement pens tops ansd small objects of little use. But fun if you like doing that sort of thing, liek making your own xmas cards and birthday cards, but after a year I got fed up with that too so went back to buying them when needed. |
3-D printer. What to print?
On Fri, 8 Dec 2017 09:12:05 -0800 (PST), whisky-dave
wrote: On Friday, 8 December 2017 16:53:10 UTC, T i m wrote: On Fri, 8 Dec 2017 16:36:47 -0000, "Brian Gaff" wrote: I guess it depends how expensive the consumables are? About 15 quid for a 1kg roll of PLA filament. That will print about 1kg worth of objects and many can be made hollow (so use less material down to about 5%). Just whats neede hollow stuff, to fix parts that are broken. Yes, we could print an exact replica of your brain and it would work better than the one you have now! ;-) As usual the subtly of my reply to Brian re the cost of filament and the typical usage range has whooshed you and I'm not going to be dragged into another pointless discussion with you on anything. Especially since we have already established you know about as much about 3D printing as you do electricity or thermodynamics! ;-( snip more crazy talk Cheers, T i m |
3-D printer. What to print?
On 08/12/2017 16:15, whisky-dave wrote:
It's a bit like making your own nuts and bolts. I know a bloke who does that, to get things to the proper scale on his model steam engines. |
3-D printer. What to print?
In article ,
Another Dave writes: I quite fancy, for a bit of fun, building one of these sub-£100 3-D printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 My wife (I'm careful, she's mean) wants to know what use it is. Looking on the internet they mostly seem to be used to print improved parts for the 3-D printer so that, presumably, you can 3-D print even better parts. Needless to say this isn't going to work with my wife (I'm rational, she's awkward). Any suggestions? For first several years, I only saw 3-D printers printing more 3-D printers. Found myself humming The Sourcer's Apprentice... I visit quite a few maker/hack spaces, and nowadays they are usually very busy printing parts for someone's project, and pieces of artwork. -- Andrew Gabriel [email address is not usable -- followup in the newsgroup] |
3-D printer. What to print?
whisky-dave wrote:
But yuo didnlt design it yourself did you. It's like getting a poster or painting done. You can buy a printer, capture the image from the website and print your own colour printer or go to anthena or other shop and buy a ready made poster. I needed a low profile PCI bracket for a RAID card. Each bracket is bespoke to the particular model of card. There was an official one, but nobody sold them. It's 'just a bit of stamped metal', but it's key to making the card fit reliably. So I went off to Thingiverse, found a low profile PCI bracket design. Move the screw holes around to match my card. The template had connectors, my card didn't. A few clicks in Sketchup and I had deleted the connectors and replaced with ventilation holes. Print, job done. It took about half an hour of design (including learning Sketchup), plus about 20 mins of printing. If I'd tried to make one out of sheet metal it would have taken a lot longer. TL;DR: open source designs can be easily customised - you don't have to accept them as-is, nor do you have to design from scratch. Theo |
3-D printer. What to print?
In article . com,
dennis@home wrote: My car club had some no longer available plastic brackets made up. Since they do break in time, fair to assume the originals only just adequate. The printed ones lasted five minutes in use. So I'd be wary of assuming something printed is as strong as a part made by traditional means, if identical dimensions. Print the part.. make a silicon mould.. cast the part with glass filled epoxy.. job done. To be honest I made replacements for my own car from ally sheet. It was others who wanted a simple new ready made part to replace them. They would certainly be strong enough made from glass fibre. -- *How much deeper would the oceans be without sponges? * Dave Plowman London SW To e-mail, change noise into sound. |
3-D printer. What to print?
|
3-D printer. What to print?
"T i m" wrote in message ... On Fri, 8 Dec 2017 20:03:26 -0000 (UTC), (Andrew Gabriel) wrote: snip For first several years, I only saw 3-D printers printing more 3-D printers. Found myself humming The Sourcer's Apprentice... :-) I visit quite a few maker/hack spaces, and nowadays they are usually very busy printing parts for someone's project, and pieces of artwork. Went round Mums earlier, "Ah Tim, I have a little job for you ..." ;-) She'd picked up a Barbie electronic game thing (the looks like a laptop) for my nieces young daughter ... for 50p from a charity shop because the plastic cover was missing from the battery compartment. I usually don't bother reading your ******** but OMG, that's the funniest thing i've read this year. Your poor wife. PS just so you know, I'm taking the ****. |
3-D printer. What to print?
"Dave Plowman (News)" wrote in message ... In article . com, dennis@home wrote: My car club had some no longer available plastic brackets made up. Since they do break in time, fair to assume the originals only just adequate. The printed ones lasted five minutes in use. So I'd be wary of assuming something printed is as strong as a part made by traditional means, if identical dimensions. Print the part.. make a silicon mould.. cast the part with glass filled epoxy.. job done. To be honest I made replacements for my own car from ally sheet. It was others who wanted a simple new ready made part to replace them. They would certainly be strong enough made from glass fibre. Good man. |
3-D printer. What to print?
T i m wrote:
On Fri, 8 Dec 2017 20:03:26 -0000 (UTC), (Andrew Gabriel) wrote: snip For first several years, I only saw 3-D printers printing more 3-D printers. Found myself humming The Sourcer's Apprentice... :-) I visit quite a few maker/hack spaces, and nowadays they are usually very busy printing parts for someone's project, and pieces of artwork. Went round Mums earlier, "Ah Tim, I have a little job for you ..." ;-) She'd picked up a Barbie electronic game thing (the looks like a laptop) for my nieces young daughter ... for 50p from a charity shop because the plastic cover was missing from the battery compartment. Cheers, T I fm Duck tape is cheaper and easier! |
3-D printer. What to print?
On Sat, 9 Dec 2017 11:48:51 +0000, Capitol wrote:
snip Went round Mums earlier, "Ah Tim, I have a little job for you ..." ;-) She'd picked up a Barbie electronic game thing (the looks like a laptop) for my nieces young daughter ... for 50p from a charity shop because the plastic cover was missing from the battery compartment. Duck tape is cheaper and easier! And a classic Brexiteer, blinkered bodge when we have the tools to do a 'proper job'. sigh Cheers, T i m |
3-D printer. What to print?
In article ,
T i m wrote: On Sat, 9 Dec 2017 11:48:51 +0000, Capitol wrote: snip Went round Mums earlier, "Ah Tim, I have a little job for you ..." ;-) She'd picked up a Barbie electronic game thing (the looks like a laptop) for my nieces young daughter ... for 50p from a charity shop because the plastic cover was missing from the battery compartment. Duck tape is cheaper and easier! And a classic Brexiteer, blinkered bodge when we have the tools to do a 'proper job'. sigh Cheers, T i m ;-) Have you noticed many of the brexiteers on here don't seem to be interested in decent DIY? Any bodge will do? Perhaps it's anything new and unknown is better than repairing an existing thing that worked pretty well. -- *A bicycle can't stand alone because it's two tyred.* Dave Plowman London SW To e-mail, change noise into sound. |
3-D printer. What to print?
On 09/12/2017 12:29, Dave Plowman (News) wrote:
In article , T i m wrote: On Sat, 9 Dec 2017 11:48:51 +0000, Capitol wrote: snip Went round Mums earlier, "Ah Tim, I have a little job for you ..." ;-) She'd picked up a Barbie electronic game thing (the looks like a laptop) for my nieces young daughter ... for 50p from a charity shop because the plastic cover was missing from the battery compartment. Duck tape is cheaper and easier! And a classic Brexiteer, blinkered bodge when we have the tools to do a 'proper job'. sigh Cheers, T i m ;-) Have you noticed many of the brexiteers on here don't seem to be interested in decent DIY? Any bodge will do? Perhaps it's anything new and unknown is better than repairing an existing thing that worked pretty well. They do tend to know a little more about Newtonian/Classical mechanics and even xenon arc lamps than the average Remoaner. |
3-D printer. What to print?
In article ,
Fredxx wrote: On 09/12/2017 12:29, Dave Plowman (News) wrote: In article , T i m wrote: On Sat, 9 Dec 2017 11:48:51 +0000, Capitol wrote: snip Went round Mums earlier, "Ah Tim, I have a little job for you ..." ;-) She'd picked up a Barbie electronic game thing (the looks like a laptop) for my nieces young daughter ... for 50p from a charity shop because the plastic cover was missing from the battery compartment. Duck tape is cheaper and easier! And a classic Brexiteer, blinkered bodge when we have the tools to do a 'proper job'. sigh Cheers, T i m ;-) Have you noticed many of the brexiteers on here don't seem to be interested in decent DIY? Any bodge will do? Perhaps it's anything new and unknown is better than repairing an existing thing that worked pretty well. They do tend to know a little more about Newtonian/Classical mechanics and even xenon arc lamps than the average Remoaner. Oh dear. Cross group stalking again. You really should seek treatment for your obsession. But thanks for confirming once more you never actually post anything relevant to a thread. -- *The modem is the message * Dave Plowman London SW To e-mail, change noise into sound. |
3-D printer. What to print?
On Fri, 08 Dec 2017 14:57:55 +0000 (GMT), "Dave Plowman (News)"
wrote: My car club had some no longer available plastic brackets made up. Since they do break in time, fair to assume the originals only just adequate. The printed ones lasted five minutes in use. So I'd be wary of assuming something printed is as strong as a part made by traditional means, if identical dimensions. Depends on the material used. PLA (Polylactic Acid) is the most commonly and most easily used plastic in 3D printers but isn't the strongest. Polycarbonate can also be used in most printers (although it makes a nasty smell and is a bit fiddly to get right) and parts printed in that are as strong as any Polycarbonate item. Nylon is also now available. |
3-D printer. What to print?
In article ,
Peter Parry wrote: On Fri, 08 Dec 2017 14:57:55 +0000 (GMT), "Dave Plowman (News)" wrote: My car club had some no longer available plastic brackets made up. Since they do break in time, fair to assume the originals only just adequate. The printed ones lasted five minutes in use. So I'd be wary of assuming something printed is as strong as a part made by traditional means, if identical dimensions. Depends on the material used. PLA (Polylactic Acid) is the most commonly and most easily used plastic in 3D printers but isn't the strongest. Polycarbonate can also be used in most printers (although it makes a nasty smell and is a bit fiddly to get right) and parts printed in that are as strong as any Polycarbonate item. Nylon is also now available. 'We' had the job done professionally. But of course dunno if the best material for the job was used - it's something you'd expect the people making them to know. They weren't cheap, either. The originals were made of the common sort of plastic you find in cars. Slightly flexible. -- *Why are a wise man and a wise guy opposites? Dave Plowman London SW To e-mail, change noise into sound. |
3-D printer. What to print?
On Fri, 08 Dec 2017 12:21:19 +0000, Another Dave wrote:
I quite fancy, for a bit of fun, building one of these sub-£100 3-D printer kits. https://tinyurl.com/yc3rcvqo https://tinyurl.com/z8hnvh5 My wife (I'm careful, she's mean) wants to know what use it is. Looking on the internet they mostly seem to be used to print improved parts for the 3-D printer so that, presumably, you can 3-D print even better parts. Needless to say this isn't going to work with my wife (I'm rational, she's awkward). Any suggestions? Assuming you can scan a small plastic part to generate a pattern file (I only know you can 3D print from such special files - not their file type), strip your electric kettle down as soon as its warranty has expired but before the fragile wishbone shaped nylon operating lever/ linkage between the on/off button/lever and the safety anti-boil dry/ automatic switch off triggered by reaching boiling temperature switch has failed so you can duplicate a couple of "improved"[1] spares when that time limited part fails so as to persuade you to buy yet another "Almost Identical" electric kettle. Even though the original part may still be in good condition, replace it with the newly printed version and hang onto it as a spare in case your own part fails prematurely due to a bad choice of plastic feedstock being used. This will prove the suitability of the printed part or else alert you to the need for using a better feedstock or a modification of the design to beef it up further. Hint: the built in obsolescence relies upon a non-safety critical part, leaving almost no wriggle room in their choice of "elected to fail just outside of the warranty period" component. It's tricky to get the element to fail to a reliable schedule in a non-dramatic failure event that would otherwise generate bad publicity for the manufacturer. Also, there's virtually no cost savings to be made in producing a 3 year life element versus a 10 year life one. In any case, electing to rely upon a cheap plastic part to fail on schedule means any in warranty miscalculations can be cheaply addressed by setting up an emergency servicing centre contract to fit replacements should there be a serious miscalculation on their part. A small lightweight package of 50,000 spare levers can be run off and cheaply air- freighted from China to any such servicing agent wherever they may be in the world. Owning your own 3D printer is your way of getting back at the manufacturers who use modern JIT computerised manufacturing techniques as a way to screw their target market out of their hard earned cash by supplying 'Cheap Goods' that fail suspiciously soon after their warranties have expired and are considered "not worth the expense of a DIY repair". [1] You can (and are strongly advised to) improve on the original design to eliminate the built in stress concentration points such as smoothing out abrupt angular deviations required to snake past other components, for example. You can probably use a larger cross section of plastic to compensate for any high temperature weaknesses in the plastic feedstock forced on you by the 3D printer's own limitations compared to what the manufacturer was able to get away with by using a high pressure injection moulding press so it seems a good idea to modify the part for extra strength if at all possible. After all, your time is far more precious than the extra penny's worth of plastic feedstock and electricity required to make a better part. -- Johnny B Good |
3-D printer. What to print?
"T i m" wrote in message ... On Fri, 8 Dec 2017 14:10:50 +0000, Adrian Caspersz wrote: snip Erm... I've just broken some 40 year old plastic door handles on a cupboard. Could print identical looking replacements. I need a spacer to raise the back of a turntable tonearm to match taller cartridges. I have an old fluke DMM with a broken slide switch. I have a casio music keyboard with a broken key. I've seen a screw on device that aerates water from the tap, reducing consumption when washing hands... Daughters ex has asked me if I could print some large chainsaw chain cutter models for show_and_tell for his class (he used to be able to buy them from Oregon). As has been mentioned elsewhere, I can do so easily, subject to the size required and the suitability to 3D printing etc but he would have to either get the 3D model file off them Oregon (if they have such and are willing etc) or get the vernier calipers out and Sketchup on a PC and get drawing. ;-) But the list of 'handy things' that I often couldn't just buy that I have printed is too long to mention. The last was some little plastic feet to allow daughter to raise her wooden pet rabbit hutch / run to stand just off the concrete to stop it sitting in water (and going rotten quickly) but low enough to not let sawdust and stuff to bow out. She's just bought a multi-panel steel framed run that comes powered coated but I fear will lose it's coating underneath (and go rusty etc) if dragged over the concrete. So, I intend to design and print some clip on feet, two per panel to both keep it just off the ground and therefore stop it getting damaged (like the concrete blocks you see on temporary fencing round building sites etc). It won't matter if the rabbits chew them as I generally use PLA and I believe that's made from corn starch or some such? The next job for the spring is to design and print a square mast foot for the folding / sailing dinghy and a matching mast step insert to help prevent the mast rotating under use / sail. The biggest thing I've designed and printed was a 90 Deg corner bracket to allow me to mount an outside light designed to go on a flat wall on the corner of a wall instead (and so lighting down both sides). I couldn't find a corner lamp fitting with the features I needed in the price range I wanted. Oh, and I printed all the plastic parts to build two more printers. ;-) Even after a couple of years using the 3D printer (after building it), I still get a buzz out of thinking of something in the morning and having it in my hand as a solid plastic object a couple of hours later. ;-) Trouble is that while I often have a problem finding exactly what I want to buy, very little of it can be made with a 3D printer. The most recent stuff has been some decent metal dinner forks, shorts that don't come down to your ****ing knees, elastic sided boots, ES sockets for the Hue lights, a decent corkscrew, the massive great Culinare One Touch Automatic Jar Opener that keeps breaking under warranty that they no longer make anymore etc. |
3-D printer. What to print?
On Sat, 09 Dec 2017 15:34:13 +0000 (GMT), "Dave Plowman (News)"
wrote: In article , Peter Parry wrote: On Fri, 08 Dec 2017 14:57:55 +0000 (GMT), "Dave Plowman (News)" wrote: My car club had some no longer available plastic brackets made up. Since they do break in time, fair to assume the originals only just adequate. The printed ones lasted five minutes in use. So I'd be wary of assuming something printed is as strong as a part made by traditional means, if identical dimensions. Depends on the material used. PLA (Polylactic Acid) is the most commonly and most easily used plastic in 3D printers but isn't the strongest. Polycarbonate can also be used in most printers (although it makes a nasty smell and is a bit fiddly to get right) and parts printed in that are as strong as any Polycarbonate item. Nylon is also now available. 'We' had the job done professionally. But of course dunno if the best material for the job was used - it's something you'd expect the people making them to know. They weren't cheap, either. The originals were made of the common sort of plastic you find in cars. Slightly flexible. ABS, also available for 3D printing. Another neat trick you can do which is used a lot by model train enthusiasts is a form of lost plastic (rather than wax) casting. Make a positive from PLA and put it in casting sand as you would wax. Molten metal poured in will melt the PLA as if it was wax leaving you with a metal casting. |
3-D printer. What to print?
On 09/12/2017 12:29, Dave Plowman (News) wrote:
better than repairing an existing thing that worked pretty well. Good job some have that attitude . Otherwise we would still have no steam power (sail works 'pretty' well), no cars (horses work 'pretty' well) etc etc etc. Don't get me wrong I am not one of the change for change sake crowd but I also don't support the always repair crowd. The 'neat trick' is knowing when to buy new and when to get/do a repair. |
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