All good advice, I can tell you have done a lot of TIG welding! What you call computer control is what we call a HF start (high frequency) which as far as I'm concerned is essential, well I have done a lot of stainless steel welding and scratch start can drive you nuts plus leave impurities in the weld.One caution is the really cheap TIGs are not computer controlled. The arc would be hard to start and maintain. I was also warned more than once you get what you pay for and to avoid the cheapy, no-name TIGs. Another trick they'll pull is to quote specs for a really low duty cycle (something like 180 amps, but only at a 10% duty cycle).
You are in good company as I think it's the Atom Exo car that brazes or it may be the RCR Superlite (comes in on topic EV version too ). I think I read somewhere they TIG braze and it gives a real nice looking joint. Maybe distortion is less too...I am using bronze welding because of my limited skills - it used to be a common automotive practice
All good advice, I can tell you have done a lot of TIG welding! What you call computer control is what we call a HF start (high frequency) which as far as I'm concerned is essential, well I have done a lot of stainless steel welding and scratch start can drive you nuts plus leave impurities in the weld.
Duncan, I have done a little Copper Nickel plate welding with TIG, how about TIG brazing with the rods you use?
Can't do much about the racing specs!
Bronze welding and Brazing are two different processes,
Brazing uses close fitting overlapping joints that the braze metal flows into
Bronze welding uses a filler metal to build up the joint, it can cope with small gaps
Fusion welding can cope with larger gaps - but any joint that you had a gap and then filled with weld is not as nice as a good joint to start with
That looks a real beauty David, AC (Aluminium) and DC (ferrous metals, SS etc) I have a similar model but not AC capable and totally agree with you about needing water cooling for bigger Alu jobs.I realize this isn't a very affordable welder but its the only tig machine I've ever used:
Yes there is quite a difference between brazing and what I know in the trade as soldering. We actually in NZ called filling say a mitre joint brazing and what you call brazing we called silver soldering in which often one tube slips into another like in the bicycle example you gave and silver soldering rods are very pricey for obvious reasons. Plumbers use a lower silver content version we called silfos and it has a low melting temp and does not wick as well as the silver solder or is not as strong but mostly it is used on copper so that's OK.Hi DavidD
I was probably being a bit too picky when I was talking about Brazing v Bronze welding