Long time ago I was able to purchase a second hand Centaur 75 Micro-
Tig welder, made by Dimetrics.
It’s a nice small unit with a converter system. Perfectly adjustable
from nearly zero to 75 Amps, with upslope, downslope and puls. A
nice stable welding unit.
It’s ment to be used with Argon. This unit was used by a firm
producing titanium pacemakers. I was experimenting on Tantalum and
also a bit on silver.
Silver worked, but needs a lot of power. I forgot about this welder
after starting with a laser. The laser is more convenient to use,
but only for small items, because of the dimensions of the welding
chamber. Dimetrics (USA) made this Centaur around 1980. As far as I
know the firm is still excisting, but I don’t know if they still
produce this welder.
The new Centaur costed around $ 8.000, but secondhand it can be
found for around $ 500 With some luck and patience it can be found on