On thin walled tubing you dont technically need to stress relieve the welds. I preheat the tubes just using MAPP gas to sweat the pipes. Once all the welding is done I will use an oxy torch and heat crayons... mark the pipes around 1" from the welds and start ocilating the torch heating it up evenly.
The chromoly does crack if you attempt to weld too hot, or too slowly. If you dont shield it while its cooling it also tends to crack. Im sure you already know this but it needs to be welded with a Tig Welder. You wont need all that beafer of one for a simple cage.. All you really need is around 80 amps and make sure you have some sort of pedal control or hand control for the heat input. Use ER80D-S2 filler rod and pure argon for the shielding gas. The Tungsten is the red one.. I think it is 3% Thoriated (Which is also radioactive I believe so dont eat it or something)
The reason I publish this stuff is because I dont care.... it is my hobby. I dont make money at this and if I do someday then perhaps I will keep more of it secretive... I never posted the actual cad files and it would be extremely difficult to copy the exact specs... could you get it close, of course.Then again go on Ebay and buy one of Marco's intake manifolds for half price. Once I sold 5 of them someone would tear it apart and copy it if they thought there was a good reason to do so.
This is just my hobby... I will make a header and intake manifold for myself. If I decide to maybe Ill make a few extras and sell them. I dont ever plan on making this a money making career though... if I get a few hundred bucks every once and while cool.
My background is confidential.
(Just kidding)
No Im not an Aerospace Engineer. I get paid $9 an hour working at a sign company. I was the General Manager of a few companies a few years ago. I moved back to Winona and now work for the great wage of $9 an hour. Now you see what I meant when I said I lack the financial backing as most people have. Want to give me a job?
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