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Tinsmith Avenue For those seeking knowledge on past techniques used by yesteryears tinsmiths. The history of Tinsmith goes back in time farther then this place can travel, but for those who want to explore, please share your findings here.


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  #1  
Old 09-22-2009, 11:35 AM
jw05450 jw05450 is offline
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Default Trammel points

Bud where did you get your trammel points that you use in your elbow video.Looking for a set that i can put a marker on it.


Jason
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Old 09-22-2009, 07:19 PM
bordontn2 bordontn2 is offline
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jw05450.............I bought a set at Lowes..Mounted on a 3/8x24"-36" plastic rod
which can be replaced with a longer wood dowel..one end has a steel point, the other a clamp with
a pencil..I modified mine to accept a fine point magic marker..both ends are movable..I'm thinking the
end with the pencil also has a steel scribe..............
bordontn2
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Old 09-22-2009, 07:23 PM
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Customed designed and made from an old pair I had lying around- you can't buy those yet
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Old 09-23-2009, 09:13 AM
jw05450 jw05450 is offline
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ok thanks
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Old 04-06-2010, 12:59 PM
oldtimer58 oldtimer58 is offline
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Hey jw,
I made my own trammels when I was an apprentice.They have served me well.
First you need to get a couple of those threaded pins from the Hilti guy(these are the pins used in those powder-actuated guns to shoot into steel beams:they are threaded on one end{1/4-20} and pointed on the other and about 2" long)
I used 2 pcs.of 1/4" square rod 25" long. Drill a hole in one end of each piece,tap it for 1/4-20 thread, screw in the inserts and secure them with nuts top and bottom.
for the adjustment piece, get a piece of band that comes around the skids of metal that come into the shop.(use the wide stuff,1 1/2-1 /3/4 wide I think).
Now heres the tricky part. you will have to layout a cofortable radius on a piece of scrap,
it needs to be about as wide as you can reach with your thumb and pinky,next lay the 2 pcs of sq rod over the arc you swung: the will give you a rough idea how LONG the hole in the band iron needs to be,the hole will be 1/4" wide the other way.( so in the flat on the piece strap, you need to layout two holes 1/4"x what ever length you determine, X inches apart)
Take and appropriate size bit and drill out most of the waste:work to the inside of your lines so you will have some room for adjustment.
when you have the holes mostly roughed out,make a couple of bends, one up,one down,about 3/4" each to form a place for your fingers to grab to adjust the trammels, then roll the strap to the radius you drew earlier(go a little tight, this will help keep the whole tight together).
Try sliding the 2 rods into the hole, adjust with the file until the strap slides up and down the rods easily but not too easily. This will loosen up over time.
All that's left is to start drawing arcs.
the lenght of 24" may seem small at first but it has allowed me to do 85% of what Ive needed to do over the years. for anything larger Ive made somethign else for that and that's a subject for another time!
Hope this helps! Questions? ask. I'll try to get a picture up soon.
BTW those threaded inserts also make an excellent punch as well. Thread a 1/4-20 hole in the end of a 3/8 or 1/2" round rod , lock it in place. The hole left by the punch will be the perfect size to hold a #8 sheet metal screw, in case you ever need to run one in with a screw or nut driver and can't get a drill and chuck in there.
Good Luck
Bill
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Old 04-06-2010, 03:05 PM
john_galt john_galt is offline
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That's good stuff,thanks oldtimer.
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Old 04-06-2010, 03:16 PM
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I actually modified a set I had with a couple electrical couplings...I'll show a close up later. One small weld joint and one knew someone that could mill out one end for me...
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Old 12-11-2012, 03:46 PM
Metalmechanic Metalmechanic is offline
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I've a Brown & Sharpe with a metal beam and extention. It has the look and 'feel' of a quality tool. It will swing about 36"
Larry
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Old 12-12-2012, 01:29 PM
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Default trammels

http://www.amazon.com/Malco-Products.../dp/B001B0WJSE
i use these work quite well
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Old 12-13-2012, 02:43 AM
larson1951 larson1951 is offline
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the two types at the top are the best trammels i have used
they are durable and very easy to set and fine tune extremely accurate......
.....and they hold
they can be put on a hardwood stick of any length
i have several sets for 30 years and they work fine
steve
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