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Woodturning (rec.crafts.woodturning) To discuss tools, techniques, styles, materials, shows and competitions, education and educational materials related to woodturning. All skill levels are welcome, from art turners to production turners, beginners to masters. |
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#41
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The Coca-Cola gambit- a new technique, or wishful finishing?
On Sun, 27 May 2007 22:53:42 GMT, Lobby Dosser
wrote: Prometheus wrote: On Sun, 27 May 2007 21:32:31 GMT, Lobby Dosser wrote: "Leo Lichtman" wrote: Let's carry this a step further. Let the bottle neck show, so it becomes part of the design. How about this? Make a gift, consisting of a bottle of wine, contained in a two-piece turned wooden shell. After the wine is gone, the recipient keeps the container, and uses it as a vase. Or buys another bottle of wine to put on the dinner table inside the same "box." Terrific Idea!! Another thing occurred to me after I hit send. There's no reason why a turned wine box would have to be two pieces- Why not turn a small hole for the neck, and leave the bottom open? With a little care, it's not too tough to get a fit that will allow the "cover" to fit tightly enough to stay on well with no further encouragement. The big concern here, of course, is that it might split badly instead of just warping a little if it's held tight against a glass vessel when the air gets really dry. Does that limit you in the design for the base? Not sure exactly what you're getting at, but I'm thinking that if we're on the same page here, it would not. If you wanted the base to be a different shape, you could just leave more wood on the outside- the important part would just be getting the inside to fit properly. |
#42
Posted to rec.crafts.woodturning
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The Coca-Cola gambit- a new technique, or wishful finishing?
On Sun, 27 May 2007 22:59:26 GMT, Lobby Dosser
wrote: Prometheus wrote: That's a possibility- and while I had initially thought to myself that the neck makes that a unusable suggestion, I just recalled seeing a guy cutting bottle glass to make outdoor lamps. The process was pretty simple- you heat up a bar of metal to an orange heat (and I would assume that an oxy acetaline torch would work fine in lieu of a forge,) bend it over, and then press the bottle against the point of the bend while rotating it. It melts the glass a little bit, and gets it hot in a thin line all the way around- and then to break it, you just plunge it into water, and the shock shears the glass cleanly. You can do this with heated nichrome wire (foam cutter) or even tie string around the bottle and set it on fire. I recall doing the string thing back in the 60s and it worked quite well. Good to know- and less work than getting the forge started and heating a piece of metal. On the subject of nichrome wire- I bought my wife a razortip woodburner a while back (she's into pyrography) and we were looking for a cheap way to dig up some wire for tips- Razortip wanted a mint for them. While it wasn't all that cheap, I messed up our (clothes) dryer a while back and wrecked the heating element. Since I was the dumb SOB that broke it in the first place, I paid a repairman to come and fix it up. After he left, I saw that he had left the old element sitting on my table saw. I untwisted the element, and cut it into 12" pieces- there's a lot of nichrome wire in one of those things. Sure enough, it works great on the razortip, and I bet it'd be perfect for cutting glass with the method described above, and might even make a good foam cutter, if a guy needed one. Just a heads-up, in case any of you have an electric dryer go out on you. |
#43
Posted to rec.crafts.woodturning
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The Coca-Cola gambit- a new technique, or wishful finishing?
On Mon, 28 May 2007 07:33:45 +0200, Peter Wells
wrote: On Fri, 25 May 2007 04:11:33 -0500, Prometheus wrote: SNIP I was wondering if there is some kind of waterproofing agent that can soak into wood? If so, maybe you could just fill the vase up with it, cover it for a day or so, then decant the remainder back into the container. A final stupid idea: what about that wrench handle dip? It's nice and thick so it should be easy to sloosh around inside a piece, and it doesn't have to be strong to hold water--the vase would supply all the support. SNIP Now, that last idea... that isn't stupid at all, and to be perfectly honest, I think it might be the best suggestion in the bunch. I haven't used or thought about that stuff in quite a while, but I bet it'd do the trick very nicely. Suggestion from SWMBO on the same basis that the vase itself provides support: trap a plastic bag of some kind between the neck of the vase and a turned ring (like an end-grain fitted-box lid with a hole in the middle). You might need to reinforce the locking ring with a dowel or some such device to prevent splitting along the grain. I had thought of that, but I'd be concerned that something like the roses we have next to the house would cut right through a plastic bag when the thorns touch it. The wrench dip is pretty thick, and seems like it would be at least mostly self-healing if it was punctured. |
#44
Posted to rec.crafts.woodturning
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The Coca-Cola gambit- a new technique, or wishful finishing?
Prometheus wrote:
snip While it wasn't all that cheap, I messed up our (clothes) dryer a while back and wrecked the heating element. Since I was the dumb SOB that broke it in the first place, I paid a repairman to come and fix it up. After he left, I saw that he had left the old element sitting on my table saw. I untwisted the element, and cut it into 12" pieces- there's a lot of nichrome wire in one of those things. Sure enough, it works great on the razortip, and I bet it'd be perfect for cutting glass with the method described above, and might even make a good foam cutter, if a guy needed one. Just a heads-up, in case any of you have an electric dryer go out on you. I used to dampen a piece of string with kerosene, tie it around a bottle, and light it. When it was burning well I dunked it in a bucket of water and it would pop right into. Probably should have worn safety glasses, but had never heard of them on the farm in the dark ages. -- Gerald Ross Cochran, GA The trouble with not having a job is that you can't take a day off! |
#45
Posted to rec.crafts.woodturning
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The Coca-Cola gambit- a new technique, or wishful finishing?
"Prometheus" wrote: Just a heads-up, in case any of you have an electric dryer go out on you. ^^^^^^^^^^^^^^^^^ If you're lucky, you will have to wait a long time for your drier to die. Check the thrift stores for toasters, small convection ovens, electric space heaters, etc. |
#46
Posted to rec.crafts.woodturning
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The Coca-Cola gambit- a new technique, or wishful finishing?
Gerald Ross wrote:
I used to dampen a piece of string with kerosene, tie it around a bottle, and light it. When it was burning well I dunked it in a bucket of water and it would pop right into. Probably should have worn safety glasses, but had never heard of them on the farm in the dark ages. The kerosene was the part I forgot!! I used to use lighter fluid, but I wasn't on the farm. Didn't wear glasses either - lack of safety instruction & sense. |
#47
Posted to rec.crafts.woodturning
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The Coca-Cola gambit- a new technique, or wishful finishing?
"Gerald Ross" wrote: (clip) When it was burning well I dunked it in a bucket of water and it would pop right into. (clip) ^^^^^^^^^^^^^^^ If you use a heated wire, I am sure you won't want to drop it into a bucket of water. I have done it by applying one drop of water to the heated glass. I am sure that would also work with the kerosene/string method. |
#48
Posted to rec.crafts.woodturning
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The Coca-Cola gambit- a new technique, or wishful finishing?
"Leo Lichtman" wrote:
"Gerald Ross" wrote: (clip) When it was burning well I dunked it in a bucket of water and it would pop right into. (clip) ^^^^^^^^^^^^^^^ If you use a heated wire, I am sure you won't want to drop it into a bucket of water. I have done it by applying one drop of water to the heated glass. I am sure that would also work with the kerosene/string method. One drop won't douse the flame. |
#49
Posted to rec.crafts.woodturning
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The Coca-Cola gambit- a new technique, or wishful finishing?
On Mon, 28 May 2007 16:16:06 GMT, "Leo Lichtman"
wrote: "Prometheus" wrote: Just a heads-up, in case any of you have an electric dryer go out on you. ^^^^^^^^^^^^^^^^^ If you're lucky, you will have to wait a long time for your drier to die. Check the thrift stores for toasters, small convection ovens, electric space heaters, etc. Sure, if you're lucky, and don't do something stupid. In my case, a bit of wire from one of my wife's pieces of clothing got stuck and I couldn't see it, so I decided to remove what looked like an access panel in the back of the drum to see if the bearings had something in them (see how much I know about dryers already?) If you know anything about dryers, it's probably pretty obvious what happened- the drum dropped, and I hadn't cut off the power, so it fried the element. Yeah, stupid, I know... |
#50
Posted to rec.crafts.woodturning
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The Coca-Cola gambit- a new technique, or wishful finishing?
How about some sort of hot plastic spray, while the lathe is running?
John Prometheus wrote: Hello all, Like many of your probably have, I've turned a few vases on my lathe- and it's not all that easy to get the finish on the inside uniform enough that I would feel comfortable with filling any of them with water. Bowls are often a different story, but they are not as difficult to finish. This, of course, defeats the purpose of a vase, if you want to have fresh flowers in it. Since the neck on my vases is always narrower than the body, putting something that is solid inside them to hold water would be a big reduction in the amount of fluid it could hold. Of course, there may be a well-established method for dealing with this, but I haven't yet run across it, so I've come up with a theory for your consideration. Today, when I was a little bored at work, I was contemplating the soda I was drinking from a plastic bottle. I recalled the economy of scale in that industry, where a large container of the product is almost the same price as a smaller one, and that I had heard at some point that this is because every size of soda bottle is made from one standard blank similar to a plastic test tube, heated and blown into a mould. It's the same stuff, whether you make a tiny 8 oz bottle or a two-liter Goliath. That's pretty impressive, when you consider it. Now, while a soda bottle blank might not be the thing needed here, it occurs to me that other plastics will soften and deform with the application of heat and [air?] pressure. There are different kinds, of course, but a soda bottle is a good example of what I'm talking about. So, if a guy were to slide a plastic tube into a turned vase, and then use a heat gun with a blower to soften it, what do you think the odds of that air pressure being enough to expand it within the vase to form a tight fit are? Centrifigal force could assist the plastic's expansion, if the lathe were on when you were heating the plastic blank. An alternate senario might be to place a flat piece of the correct type of plastic over the mouth of the vase, and heat it with a hair dryer while applying suction through a hole in the bottom with a shop vac. In either case, you'd (hopefully- I'm not really a plastics guy) end up with a second vessel inside your turned vase that would be entirely water-proof, would cost very little, and would make an item that might be for sale to the general public much more durable and practical. If anyone on the list happens to be involved with plastics in some capacity, feel free to steal the idea if it has any merit and run with it- I'd be thrilled to be able to buy vase liners that are made of the right material and easy to use in packs of a dozen or so, provided the price was not insanely high. I know this may not appeal to those who are heavily invested in the mystique of all-wood, and traditional finishing- but I think it's an idea that might be worth pursuing for a lot of folks. For me, the vase is all about the outside- I could care less if the interior was covered with plastic, paint, or even that spray-in truck bed liner, and I doubt that the stems of the flowers are going to lodge any formal protests, either! I'll give it a try during the holliday weekend, and report back- if anyone else decides to give this a go, and has some success or additional thoughts on how it might be done in the easiest possible way, I'd be very happy to hear about it! (Also, for your general consideration, I just tried heating a soda bottle with my lighter, and it *will* shrink before it burns- so it's not a thermoset product. It's quite possible that they may be just the thing to use, and it's a good recycling trick, if you're into that! My inital thought is that a wide-mouth bottle would probably be easier to work with, but I won't know until I play with this a bit.) |
#51
Posted to rec.crafts.woodturning
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The Coca-Cola gambit- a new technique, or wishful finishing?
"Prometheus" wrote: (clip) Yeah, stupid, I know... ^^^^^^^^^^^^^^^^^ It's NOT stupid to make the same mistake for the first time. It's NOT stupid if you figure out what happened, admit that you made a mistake, and treat it as a learning experience. It's NOT stupid to turn a lemon into lemonade. You did get an ample suply of heater wire for your pyrography pen. Was it an underwire bra? It's okay to use words like that here. We're adults. |
#52
Posted to rec.crafts.woodturning
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The Coca-Cola gambit- a new technique, or wishful finishing?
In scanning through all of the replies, I was surprised that no one
suggested using the two part expoxy finish that you can pick up at any Woodcraft store. Two coats will give you a very durable finish that is better than 1/16" thick. I would just mix a batch, pour it in and then rotate the bottle until the entire inside is coated. Than wait a day or so and repeat the process. This is the same material that they use to coat bar tops where they embed various things (insects, coins?) etc. right in the top. They never wear out and are continually exposed not only to water but also alcohol. Should work fine for a vase. "Prometheus" wrote in message ... Hello all, Like many of your probably have, I've turned a few vases on my lathe- and it's not all that easy to get the finish on the inside uniform enough that I would feel comfortable with filling any of them with water. Bowls are often a different story, but they are not as difficult to finish. This, of course, defeats the purpose of a vase, if you want to have fresh flowers in it. Since the neck on my vases is always narrower than the body, putting something that is solid inside them to hold water would be a big reduction in the amount of fluid it could hold. Of course, there may be a well-established method for dealing with this, but I haven't yet run across it, so I've come up with a theory for your consideration. Today, when I was a little bored at work, I was contemplating the soda I was drinking from a plastic bottle. I recalled the economy of scale in that industry, where a large container of the product is almost the same price as a smaller one, and that I had heard at some point that this is because every size of soda bottle is made from one standard blank similar to a plastic test tube, heated and blown into a mould. It's the same stuff, whether you make a tiny 8 oz bottle or a two-liter Goliath. That's pretty impressive, when you consider it. Now, while a soda bottle blank might not be the thing needed here, it occurs to me that other plastics will soften and deform with the application of heat and [air?] pressure. There are different kinds, of course, but a soda bottle is a good example of what I'm talking about. So, if a guy were to slide a plastic tube into a turned vase, and then use a heat gun with a blower to soften it, what do you think the odds of that air pressure being enough to expand it within the vase to form a tight fit are? Centrifigal force could assist the plastic's expansion, if the lathe were on when you were heating the plastic blank. An alternate senario might be to place a flat piece of the correct type of plastic over the mouth of the vase, and heat it with a hair dryer while applying suction through a hole in the bottom with a shop vac. In either case, you'd (hopefully- I'm not really a plastics guy) end up with a second vessel inside your turned vase that would be entirely water-proof, would cost very little, and would make an item that might be for sale to the general public much more durable and practical. If anyone on the list happens to be involved with plastics in some capacity, feel free to steal the idea if it has any merit and run with it- I'd be thrilled to be able to buy vase liners that are made of the right material and easy to use in packs of a dozen or so, provided the price was not insanely high. I know this may not appeal to those who are heavily invested in the mystique of all-wood, and traditional finishing- but I think it's an idea that might be worth pursuing for a lot of folks. For me, the vase is all about the outside- I could care less if the interior was covered with plastic, paint, or even that spray-in truck bed liner, and I doubt that the stems of the flowers are going to lodge any formal protests, either! I'll give it a try during the holliday weekend, and report back- if anyone else decides to give this a go, and has some success or additional thoughts on how it might be done in the easiest possible way, I'd be very happy to hear about it! (Also, for your general consideration, I just tried heating a soda bottle with my lighter, and it *will* shrink before it burns- so it's not a thermoset product. It's quite possible that they may be just the thing to use, and it's a good recycling trick, if you're into that! My inital thought is that a wide-mouth bottle would probably be easier to work with, but I won't know until I play with this a bit.) |
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