OldTools Archive
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130047 | Jim Thompson <jdthompsonca@s...> | 2004‑03‑03 | Pewter rings |
On Wednesday, March 3, 2004, at 02:10 PM, Blake Ashley wrote: > How did you get those pewter rings on? They look great! > I learned this trick from Scott Grandstaff a couple of years ago. As he explained it to me: In the lathe, cut a groove in the wood about 1/4" wide and 1/4" deep. Use a couple of layers of masking tape around the groove, which will serve as the form for the liquid pewter you are going to pour in. Make a hole in the top of the tape. The masking tape will not burn when you pour in the pewter. Pewter is easy to melt with a propane torch and a tin can. I found that I like to make a small mouth out of putty around the hole in the tape so that when the liquid metal solidifies and shrinks there will be enough metal to file off and not be too low. You need to make the pewter ring about an eighth bigger in diameter than what you want it to finish at so you will have metal to cut down to size. I find that it is easy to make the groove in the wood too narrow, and this lets the pewter get bubbles in it which can't get out. You would think that molten pewter would burn the wood, but it doesn't. Let it cool by itself, no water! The solidified pewter cuts very easily with ordinary lathe tools. Scott has found a source for tin, which is what pewter actually is, at about $8 a pound. I keep an eye out for junk pewter at estate sales and fleas and get it for a lot less. You can also make inlays by undercutting the area the pewter will go into so it can't fall out. Then file it down and polish it. Jim Thompson, the old millrat in Riverside, CA |
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130058 | Jim Thompson <jdthompsonca@s...> | 2004‑03‑03 | Re: Pewter rings |
The pieces I have found were marked "Pewter" on the bottom. Actually I have to admit that if it isn't marked, I don't know how to identify it. My SWMBO can tell at a glance though, and I rely on her. Maybe somebody else can answer this better. On Wednesday, March 3, 2004, at 07:14 PM, Larry Marshall wrote: > >> Scott has found a source for tin, which is what pewter actually >> is, at about $8 a pound. I keep an eye out for junk pewter at >> estate sales and fleas and get it for a lot less. > > Jim, how does one identify 'pure' pewter at a flea market? I've got > to try this. > Jim Thompson, the old millrat in Riverside, CA |
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130061 | "Richard J. Hucker" <colhuck@n...> | 2004‑03‑03 | Re: Pewter rings |
It seems that every time I need materials that are hard to find, I go to http://www.mcmaster.com/ . They have Pewter along with the casting putty. Col. Dick Hucker (Huck) Dyer, Indiana ----- Original Message ----- From: "Larry Marshall" |
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130055 | Larry Marshall <larry@w...> | 2004‑03‑03 | Re: Pewter rings |
> Scott has found a source for tin, which is what pewter actually > is, at about $8 a pound. I keep an eye out for junk pewter at > estate sales and fleas and get it for a lot less. Jim, how does one identify 'pure' pewter at a flea market? I've got to try this. -- Cheers --- Larry Marshall Quebec City, QC http://www.woodnbits.com |
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130060 | Larry Marshall <larry@w...> | 2004‑03‑03 | Re: Pewter rings |
On March 3, 2004 10:35 pm, you wrote: > The pieces I have found were marked "Pewter" on the bottom. This would be a good indicator :-) > Actually I have to admit that if it isn't marked, I don't know > how to identify it. My SWMBO can tell at a glance though, and I > rely on her. Ah...a pewter sniffer in the family. My wife gets too bored with my rummaging through boxes of rust to go to flea markets with me :-) -- Cheers --- Larry Marshall Quebec City, QC http://www.woodnbits.com |
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130103 | scott grandstaff <scottg@s...> | 2004‑03‑04 | Re: Pewter rings |
Me, I just went on ebay and searched for pewter. This brings up lots of small hobby casting outfits but the radiator rebuilders offered it alot cheaper. It's all, like, 99% or more plain tin and some small additives like antimony, copper, etc. Different refiners use different recipes but the additives are so small I can't tell any difference. You could indeed use staybright or modern soft "silver" solder for plumbing, but the expense.......... The cast metal shrinks a bit when it cools so I build up the edges of the groove with a couple layers of tape first. Then, I lay a piece of greased twine (clothesline) in the groove before covering it with the masking tape. Don't stick the tape ends together but leave a bit of space. This is so you can pull the string out after you've built up at least a couple/three layers of tape on top of the string. Lately I've been building up cones of tape and drywall mud to form a small funnel for a pour spout. This gives you a bit more metal weight over the mold to push out a few more air bubbles (hate those bubbles). I also punch (or actually drill with an awl so's I don't crush the paper mold) a small air hole near the pour spout when the mud dries. Then tip it over a bit when pouring so the metal can flow around hitting the breather hole last. When I see metal peeking up through the hole I know it's made it. You want the metal pretty hot. Too cold and it won't flow well enough. I heat over a one burner propane camp stove (elegance, eh? 8^) for at least several minutes after it melts. If it scorches a toothpick right quick you're probably there. Graphite is supposed to help the metal flow better (George had better suggestions for pouring lube, but I couldn't find any of the stuff) so I'll pop a little squirt of it from a door lock lubricator tube just before I pour. I'm not sure it helps, but it doesn't hurt. Last thing you do before tipping the ladle is a quick skim of surface crud with a stick. I still haven't been able to get it to flow into fine detail crevices. Rings or anything large is pretty easy. But get it down small and there's always some trouble. Last thing I heard was to pre heat the handle (it's wood, so I figured maybe a couple hundred degrees tops) and I'm going to try that soon. I'll let you know. yours, Scott -- Scott Grandstaff, Box 409, Happy Camp, CA 96039 Tools: http://users.snowcrest.net/kitty/scott/scotts/tools/tools.html PageWorks: http://www.snowcrest.net/kitty/hpages/ |
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130094 | reeinelson@w... (Bob Nelson) | 2004‑03‑04 | Re: Pewter rings |
Hi Larry & All, Larry asks how you identify junk pewter to melt down in the anteek shops. Unfortunately, I can tell you more about pewter than you probably want to know. Jim's answer was a very proper one - buy stuff that has "Pewter" stamped on the bottom. If it does not have that marking, it's quite possibly an older and more valuable piece that should be left for a collector. One of the oddities about pewter is that if it has that pewter marking, it isn't really (to many people) pewter; it's a variation called Britannia Metal made in the 1900s vs. earlier than that. But it will do fine for melt down purposes. Experts disagree to some extent, but the most common thinking is that "real" pewter is a mixture of tin and lead. Britannia metal has no lead; it has antimony instead. Very much like the change made to solder a few years back when the lead in it was replaced by antimony to avoid lead in the drinking water from the solder on pipe joints. Instead of melting down old "pewter", you can simply use solder - essentially the same thing but maybe mixed to be a bit softer than the "pewter" was. Best Wishes, Bob |
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130105 | "Foster, Jim" <james.foster@u...> | 2004‑03‑04 | RE: Pewter rings |
Well, the question becomes, what is "pure?" Pewter has a lot of alloys over the years, with most of the ones used for foodstuffs being low lead, while some of the art alloys using quite a bit of lead as a = "filler."=20 You might want to try a good scrap metal yard. They may have some known alloy tin scrap. If I were making fish wackers I wouldn't care much = about the lead content, and would use any of the various alloys I have around = for bullet casting. If I were going to be handling it a lot, like for a = brace, I'd be more fussy.=20 Jim Foster A link to some pewter info: http://www.dmgovan.com/?page=3Dwhat_is >=20 >=20 > The pieces I have found were marked "Pewter" on the bottom. >=20 > Actually I have to admit that if it isn't marked, I don't=20 > know how to=20 > identify it. My SWMBO can tell at a glance though, and I rely on her. >=20 > Maybe somebody else can answer this better. >=20 > On Wednesday, March 3, 2004, at 07:14 PM, Larry Marshall wrote: >=20 > > > >> Scott has found a source for tin, which is what pewter actually > >> is, at about $8 a pound. I keep an eye out for junk pewter at > >> estate sales and fleas and get it for a lot less. > > > > Jim, how does one identify 'pure' pewter at a flea market? I've got > > to try this. > > > Jim Thompson, the old millrat in Riverside, CA >=20 >=20 > Archive: http://www.frontier.iarc.uaf.edu/~cswingle/archive/ > To unsubscribe or change options, use the web interface: > http://galoots.law.cornell.edu:81/read/?forum=3Doldtools >=20 |
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130097 | Larry Marshall <larry@w...> | 2004‑03‑04 | Re: Pewter rings |
> anteek shops. Unfortunately, I can tell you more about pewter > than you probably want to know. This doesn't sound unfortunate from where I sit :-) > Jim's answer was a very proper > one - buy stuff that has "Pewter" stamped on the bottom. If it I like 'easy'. I'm best at mastering such skills. > oddities about pewter is that if it has that pewter marking, it > isn't really (to many people) pewter; it's a variation called > Britannia Metal made in the 1900s vs. earlier than that. But it > will do fine for melt down purposes. Interesting. > Experts disagree to some > extent, but the most common thinking is that "real" pewter is a > mixture of tin and lead. Britannia metal has no lead; it has > antimony instead. Ah...I'm not as dumb as I generally think I am. Last night I went to the McMaster-Carr site that Richard mentioned and found "lead-free pewter". That seemed counter to the definition of it that I knew. Thanks for clarifying this. > Instead of melting down old "pewter", you can simply use solder - > essentially the same thing but maybe mixed to be a bit softer > than the "pewter" was. Well, shazaam....might be worth a try. I feel edified. Thanks. -- Cheers --- Larry Marshall Quebec City, QC http://www.woodnbits.com |
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130101 | "Bramel, Jim" <jbram00@e...> | 2004‑03‑04 | RE: Pewter rings |
I think I mentioned this before but - I used liquid solder=20 (from a tube). It was for a brace with the pewter rings=20 missing. The wood was wired on. I tightened the wire and=20 started squeezing the liquid solder on. I did it over a few=20 days, a layer at a time. When I finally got it on a little=20 above the wood, I started working it down. The only problem I had, was the solder kinda blended into the wood. I could have taken care of that at the start but didn't. I used=20 lacquer thinner and it took care of most of it. Jim =20 -----Original Message----- From: Larry Marshall [mailto:larry@w...]=20 Sent: Thursday, March 04, 2004 10:47 AM To: oldtools Subject: Re: [oldtools] Pewter rings you can simply use solder - |
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