Thanks 36 coupe,
I was lucky to get some parts cheap locally.
$50 for Weldanpower inductor choke (never used)
$60 for four 275A stud diodes
Free aluminum heat sink plates for diodes
Well I have to hold on to the money right now, times are getting tuff for somes of us...
For now I'll just keep the run time down and watch the temp.
I have a K type thermocouple 3" stainless probe that I'll thermally attach to the laminations and run the lead outside to read temps. I'll have to turn the welder off before connecting the probe since the mag field will cause erroneous measurements if not overload the meter input.