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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Finish on PVC pipe/conduit
I'm machining some small enclosures using PVC electrical conduit (off white
color). The electrical condut just happens to have the needed ID/OD. I'm using acetone to remove the manufacturers ink labelling which is marked down the pipe, but the finish still looks like water pipe/conduit. I'm making them in batches of 20 or so. Painting or dying is not really an option, I could spin them in the lathe and take a light cut along the length but I'd like to avoid this if I can. I thought about wiping over with solvent to soften and smooth the top surface but this may leave "wipe" marks on the surface. I tried to source clean PVC pipe without marking etc but I could not find anything. Does anyone have any other ideas on a quick simple way to finish the external surface nicely? TIA |
#2
Posted to rec.crafts.metalworking
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Finish on PVC pipe/conduit
Den wrote: I'm machining some small enclosures using PVC electrical conduit (off white color). The electrical condut just happens to have the needed ID/OD. I'm using acetone to remove the manufacturers ink labelling which is marked down the pipe, but the finish still looks like water pipe/conduit. I'm making them in batches of 20 or so. Painting or dying is not really an option, I could spin them in the lathe and take a light cut along the length but I'd like to avoid this if I can. I thought about wiping over with solvent to soften and smooth the top surface but this may leave "wipe" marks on the surface. I tried to source clean PVC pipe without marking etc but I could not find anything. Does anyone have any other ideas on a quick simple way to finish the external surface nicely? TIA Is the same size available to make PVC furniture? That has no markings and a better finish, but I don't know the physical details. -- aioe.org is home to cowards and terrorists Add this line to your news proxy nfilter.dat file * drop Path:*aioe.org!not-for-mail to drop all aioe.org traffic. http://improve-usenet.org/index.html Use any search engine other than Google till they stop polluting USENET with porn and junk commercial SPAM |
#3
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Finish on PVC pipe/conduit
"Michael A. Terrell" wrote in message m... Den wrote: I'm machining some small enclosures using PVC electrical conduit (off white color). The electrical condut just happens to have the needed ID/OD. I'm using acetone to remove the manufacturers ink labelling which is marked down the pipe, but the finish still looks like water pipe/conduit. I'm making them in batches of 20 or so. Painting or dying is not really an option, I could spin them in the lathe and take a light cut along the length but I'd like to avoid this if I can. I thought about wiping over with solvent to soften and smooth the top surface but this may leave "wipe" marks on the surface. I tried to source clean PVC pipe without marking etc but I could not find anything. Does anyone have any other ideas on a quick simple way to finish the external surface nicely? TIA Is the same size available to make PVC furniture? That has no markings and a better finish, but I don't know the physical details. I dont think its available - I've looked. It's only 20mm OD x 16mm ID. I imagine the furniture stuff is bigger than this - having said that I've looked for and not been able to locate any furniture tube locally (in Australia). Maybe I need to look harder! Thanks. |
#4
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Finish on PVC pipe/conduit
In article , "Den" wrote:
I'm machining some small enclosures using PVC electrical conduit (off white color). The electrical condut just happens to have the needed ID/OD. I'm using acetone to remove the manufacturers ink labelling which is marked down the pipe, but the finish still looks like water pipe/conduit. I'm making them in batches of 20 or so. Painting or dying is not really an option What's wrong with paint? -- Regards, Doug Miller (alphageek at milmac dot com) It's time to throw all their damned tea in the harbor again. |
#5
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Finish on PVC pipe/conduit
"Doug Miller" wrote in message ... In article , "Den" wrote: I'm machining some small enclosures using PVC electrical conduit (off white color). The electrical condut just happens to have the needed ID/OD. I'm using acetone to remove the manufacturers ink labelling which is marked down the pipe, but the finish still looks like water pipe/conduit. I'm making them in batches of 20 or so. Painting or dying is not really an option What's wrong with paint? -- Regards, Doug Miller (alphageek at milmac dot com) It's time to throw all their damned tea in the harbor again. Hi Doug, it's very price sensitive, the time for painting would have quite an impact. |
#6
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Finish on PVC pipe/conduit
I recently saw them making plastic screwdriver handles on "How its
Made". After machining, they just dipped (submerged) the parts in "solvent" to make the parts shiny. This provided the micro-melting needed to blend machining marks, I guess. Pete Stanaitis --------------------- Den wrote: I'm machining some small enclosures using PVC electrical conduit (off white color). The electrical condut just happens to have the needed ID/OD. I'm using acetone to remove the manufacturers ink labelling which is marked down the pipe, but the finish still looks like water pipe/conduit. I'm making them in batches of 20 or so. Painting or dying is not really an option, I could spin them in the lathe and take a light cut along the length but I'd like to avoid this if I can. I thought about wiping over with solvent to soften and smooth the top surface but this may leave "wipe" marks on the surface. I tried to source clean PVC pipe without marking etc but I could not find anything. Does anyone have any other ideas on a quick simple way to finish the external surface nicely? TIA |
#7
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Finish on PVC pipe/conduit
Thanks Pete - this solvent smoothing is something I need to look further
into. Thanks. "spaco" wrote in message .. . I recently saw them making plastic screwdriver handles on "How its Made". After machining, they just dipped (submerged) the parts in "solvent" to make the parts shiny. This provided the micro-melting needed to blend machining marks, I guess. Pete Stanaitis --------------------- Den wrote: I'm machining some small enclosures using PVC electrical conduit (off white color). The electrical condut just happens to have the needed ID/OD. I'm using acetone to remove the manufacturers ink labelling which is marked down the pipe, but the finish still looks like water pipe/conduit. I'm making them in batches of 20 or so. Painting or dying is not really an option, I could spin them in the lathe and take a light cut along the length but I'd like to avoid this if I can. I thought about wiping over with solvent to soften and smooth the top surface but this may leave "wipe" marks on the surface. I tried to source clean PVC pipe without marking etc but I could not find anything. Does anyone have any other ideas on a quick simple way to finish the external surface nicely? TIA |
#8
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Finish on PVC pipe/conduit
On Mon, 07 Apr 2008 20:45:42 -0500, with neither quill nor qualm,
spaco quickly quoth: I recently saw them making plastic screwdriver handles on "How its Made". After machining, they just dipped (submerged) the parts in "solvent" to make the parts shiny. This provided the micro-melting needed to blend machining marks, I guess. Right, so just take your 20' sections of pvc pipe up your 48' ladder and dip them in a solvent-filled 21' pipe and hang from your 55' high shop trusses while they dry. Piece of cake, duck soup, spaco. I'd suggest spraying with lacquer or shellac, both of which are extremely thin and quick drying, but'll gloss things up in a hurry. -- Save the whales! Trade them for valuable prizes. |
#9
Posted to rec.crafts.metalworking
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Finish on PVC pipe/conduit
Den wrote:
I'm machining some small enclosures using PVC electrical conduit (off white color). The electrical condut just happens to have the needed ID/OD. I'm using acetone to remove the manufacturers ink labelling which is marked down the pipe, but the finish still looks like water pipe/conduit. I'm making them in batches of 20 or so. Painting or dying is not really an option, I could spin them in the lathe and take a light cut along the length but I'd like to avoid this if I can. I thought about wiping over with solvent to soften and smooth the top surface but this may leave "wipe" marks on the surface. I tried to source clean PVC pipe without marking etc but I could not find anything. Does anyone have any other ideas on a quick simple way to finish the external surface nicely? TIA Small enough that you could toss them in a vibratory cleaner? Just load it with grit and let it prep the surface prior to the machine work. Or buy a few cans of the Fusion paint. It works very well on un-prepped plastic. -- Steve W. Near Cooperstown, New York Life is not like a box of chocolates it's more like a jar of jalapenos- what you do today could burn your ass tomorrow! |
#10
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Finish on PVC pipe/conduit
Use a strip of scotch brite and spin it in the lathe
Den wrote: I'm machining some small enclosures using PVC electrical conduit (off white color). The electrical condut just happens to have the needed ID/OD. I'm using acetone to remove the manufacturers ink labelling which is marked down the pipe, but the finish still looks like water pipe/conduit. I'm making them in batches of 20 or so. Painting or dying is not really an option, I could spin them in the lathe and take a light cut along the length but I'd like to avoid this if I can. I thought about wiping over with solvent to soften and smooth the top surface but this may leave "wipe" marks on the surface. I tried to source clean PVC pipe without marking etc but I could not find anything. Does anyone have any other ideas on a quick simple way to finish the external surface nicely? TIA |
#11
Posted to rec.crafts.metalworking
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Finish on PVC pipe/conduit
Yeah - tried that, not really a good finish. It gives a good finish on
machined standard gray PVC rod but doesn's work too well on the tube I'm using. I dont know, it may have something to do with UV stabilisers or something in the plastic tube. "MK1" wrote in message news Use a strip of scotch brite and spin it in the lathe Den wrote: I'm machining some small enclosures using PVC electrical conduit (off white color). The electrical condut just happens to have the needed ID/OD. I'm using acetone to remove the manufacturers ink labelling which is marked down the pipe, but the finish still looks like water pipe/conduit. I'm making them in batches of 20 or so. Painting or dying is not really an option, I could spin them in the lathe and take a light cut along the length but I'd like to avoid this if I can. I thought about wiping over with solvent to soften and smooth the top surface but this may leave "wipe" marks on the surface. I tried to source clean PVC pipe without marking etc but I could not find anything. Does anyone have any other ideas on a quick simple way to finish the external surface nicely? TIA |
#12
Posted to rec.crafts.metalworking
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Finish on PVC pipe/conduit
I'm machining some small enclosures using PVC electrical conduit (off white
color). The electrical condut just happens to have the needed ID/OD. I'm using acetone to remove the manufacturers ink labelling which is marked down the pipe, but the finish still looks like water pipe/conduit. I'm making them in batches of 20 or so. Painting or dying is not really an option, I could spin them in the lathe and take a light cut along the length but I'd like to avoid this if I can. I thought about wiping over with solvent to soften and smooth the top surface but this may leave "wipe" marks on the surface. I tried to source clean PVC pipe without marking etc but I could not find anything. Does anyone have any other ideas on a quick simple way to finish the external surface nicely? TIA Possibly a light sand-blasting??? Ken. |
#13
Posted to rec.crafts.metalworking
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Finish on PVC pipe/conduit
On Tue, 8 Apr 2008 09:12:25 +0800, "Den" wrote:
I'm machining some small enclosures using PVC electrical conduit (off white color). The electrical condut just happens to have the needed ID/OD. I'm using acetone to remove the manufacturers ink labelling which is marked down the pipe, but the finish still looks like water pipe/conduit. I'm making them in batches of 20 or so. Painting or dying is not really an option, I could spin them in the lathe and take a light cut along the length but I'd like to avoid this if I can. I thought about wiping over with solvent to soften and smooth the top surface but this may leave "wipe" marks on the surface. I tried to source clean PVC pipe without marking etc but I could not find anything. If you call the pipe manufacturer and order in sufficient quantities to make a special order economical to run, they'll make darned near anything you want. Exact ID and OD specified (or even square or rectangular) if you'll pay for a set of special extrusion dies, exact color and type material you want, plasticizers for added flexibility, markings or no markings, etc. If it's being produced as water pipe or electrical conduit for retail sale that pipe HAS to have the required markings on it by law. They might be able to turn off the label printer and run you a special batch, but that's about all they can change easily. Does anyone have any other ideas on a quick simple way to finish the external surface nicely? Dip or spray with the right solvent. No touch, ergo no brush marks. But be careful on solvent selection - on some plastics (acrylics are most sensitive) certain mis-matching petroleum solvents will cause the surface to craze over time with a network of deep cracks, that can even lead to mechanical failure. -- Bruce -- |
#14
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Finish on PVC pipe/conduit
"Bruce L. Bergman" wrote in message news On Tue, 8 Apr 2008 09:12:25 +0800, "Den" wrote: I'm machining some small enclosures using PVC electrical conduit (off white color). The electrical condut just happens to have the needed ID/OD. I'm using acetone to remove the manufacturers ink labelling which is marked down the pipe, but the finish still looks like water pipe/conduit. I'm making them in batches of 20 or so. Painting or dying is not really an option, I could spin them in the lathe and take a light cut along the length but I'd like to avoid this if I can. I thought about wiping over with solvent to soften and smooth the top surface but this may leave "wipe" marks on the surface. I tried to source clean PVC pipe without marking etc but I could not find anything. If you call the pipe manufacturer and order in sufficient quantities to make a special order economical to run, they'll make darned near anything you want. Exact ID and OD specified (or even square or rectangular) if you'll pay for a set of special extrusion dies, exact color and type material you want, plasticizers for added flexibility, markings or no markings, etc. If it's being produced as water pipe or electrical conduit for retail sale that pipe HAS to have the required markings on it by law. They might be able to turn off the label printer and run you a special batch, but that's about all they can change easily. Does anyone have any other ideas on a quick simple way to finish the external surface nicely? Dip or spray with the right solvent. No touch, ergo no brush marks. But be careful on solvent selection - on some plastics (acrylics are most sensitive) certain mis-matching petroleum solvents will cause the surface to craze over time with a network of deep cracks, that can even lead to mechanical failure. -- Bruce -- Thanks Bruce. My volume is so small that I'm not sure they'd even answer the phone if I called. The tubing is less than $10 a length off the shelf, the low cost is what makes it attractive. The solvent polishing is looking more attractive - especially if I don't wipe it. Maybe MEK may be worth trying, its used with PVC so shouldn't have any negative long term effects. |
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