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Here is a quick sketch of what I am trying to build.
Goals:
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Can Brazing
The 18-8 SS came in from McMaster Carr, .014 "thick. The steel is very stiff and hard to form, but I was successful. A piece 9.97 x 6.5 was cut and formed into a roll. I brazed the seam with left over rod form my last project. The rod was from DA.
A perfect OD match was done to the MTW 110 Can pictured. Now that I know that the metal can be brazed, it will be easy to complete. The issue I have with brazing is the vibration in that the can will have many but joints and fear there will be splitting of the seams. Still working on the TIG!! Now the ends and internal components will be fabricated. |
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springdale, pa usa
Joined Aug 2006
978 Posts
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You can buy silver brazing kits at your local hardware store that have that have a thin ribbon filler rather than rod. I would think it would work better for you as melts much easier
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Almost ready to Braze. Need Rod. Still need a couple of pieces. The weight of the SS version of an upgraded 110 is going to probably end 30% heavier. The rod and extra components will add to the weight to bring the can close to one lbs. My goal was to make an 85DB or lower muffler at 10 ft. distance.
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Hi all, Merry Christmas and a Happy New Year!
I have been off the rc grid for the last four months or so, as my work has really ramped up. Non the less, I still have an eye for retirement and building my own stuff. The goal has been to work on fabricating thin SS sheets .012 to .014 thick to make my own cans. I have recently acquired a very good TIG welder which will allow me to weld thin sheet metal. My problem has been that with the welders I had access to, the starting amps were too high and I would blow a hole through the sheet metal. While there are methods to mitigate start-up heat such as using a copper backing, this method is not suited for every situation. With the addition of a 200DX TIG welder, an arc can be started at 5 amps and with the use of the pedal slowly increase the amps to where a puddle is formed without blowing through the metal. The welder at the right is a MIG welder. I am counting the days to retirement. But like the God Father, "Just when I thought I could get out, they pull me back in" |
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Quote:
The other reason I got the welders is that my sons want to restore a muscle car with the old man. So it is a family bonding type of thing. Believe it or not, we all talk about rebuilding RC engines, but there are only a handful of shops that do engine work. When I was a kid, engine rebuilders were a dime a dozen. Now engines are throw away. |
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New Welder Cart And Weld Table
Hi all,
Wanted to share with you my latest project. Being in the city, I have very little space. I need a welding table and I have two welders, a MIG and a TIG each with its own cart. Not only that, but I really need three different gasses for what I will be doing, namely, C25, Argon, and Tri-Mix. I am building this table for under $200, mostly from aluminum purchased at the scrap yards here in Boston and scrap from a discarded optical table from one of the local universities. The material is 80/20 T slot aluminum. The wheels were purchased, and I had to buy the fasteners from McMaster to put it all together. The only thing that is incomplete are the bottle and cable holders and the top surface plate. I still have not made up my mind as to placing 6 or 8 x 24x1/2 steel with one inch spacing or a flat ground plate with 5/8" holes for fixturing. The plate would blow my budget by quite a bit. The 8" plate I can get for free. Free sounds good. I could use a hogan drill to do the holes but it would be very time consuming. The welding surface will be 24x36 inches more than enough to do my small projects. A brigeport was used to square the edges. I will post more as I go along. |
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With an acetylene torch, 4 pieces of 1/2x8x24 pieces of flat stock was cut.
The four pieces were deburred, stacked up and the torch cut surfaces smoothed out to get eqal length cuts. The mill could have been used, but this is a welding table. The pieces are flat, but I may need to place standoffs underneath the welding surface to get it perfect. I am ordering 8mmx1.25 flat head bolts. As soon as I get them, I will drill and couter sink the the plates. Once this is done, I can start welding the other aluminum frame components using the spool gun. Items to fabricate:
This is a nice little project. I forgot ....Fire Extinguisher. Normally one should wait 30 minutes after welding to ensure weld ambers do not start a fire. |
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The 80/20 aluminum is coated, and it is insulating the plates from the frame.
I will have to get some metal and mount the plates on top so when I attach the welder ground to one section, all sections will be grounded together. I never knew this, good that I tested the frame otherwise I would have gotten poor results. Normally, one would make a welding table completely out of steel so this issue would never come up. |
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Today I placed a couple of 1/8" steel strips under the 8" plates and the grounding issue is resolved.
I made a fixture to hold the tig welder foot pedal. The first time I used a spool gun and the weld quality was poor though functional for this application. Lots of soot and poor weld. I took a sheet and practiced laying a bead and finally came up with a good setting. Aluminum....clean, clean clean. I had to use some acetone. The thing I dislike the most is cable everywhere. I like a neat working area. I forgot to cut out an area for the wire to go through, that is next. The eventual goal of all of this is to fabricate my own cans. I got a good process to weld thin ss that I did at work, but needed a table at home to duplicate it. |
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The table s almost finished, just need the cable hangers. The plumbing is compete from the compressor to allow for grinding and polishing. The Festo units remove 99.9% of oils and moisture.
For a next gargage project I will build a small paint hood for air brush painting. I am out of space!!!! To complete the table, I will be loking for a small turn table and vise. I will machine a manifold this week to allow for multiple gasses without removing the hoses from the welder. One of the issues I have is grinding dust. It gets into everything. A solution must be found. |
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Manifold
Today i machined a manifold out of an old piece of 1" wide aluminum. The Swagelok valves and fittings came in and I was able to connect to the MIG welder. I also changed the wheels as they we re starting to bend. I had a rating of 600 lbs and that was not enough so i went to 1200 for four.
Naturally, I am over budget with the changes. The stand needs some leveling jacks. The garage floor is not very even. |
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