I believe I had the same machine long ago (now also gone with the
I never found a source for crucibles but mine were sort of side
wards. Open on the down hill side and a high curved wall the metal
flowed along and into the flask. 1 3/4" flasks sound about right by
memory, well I still have a bunch that size.
It was not a great casting machine, might have worked fine for a
tooth or two. If I still had it I’d be sorely tempted to convert it
into a broken arm machine (hacksaw are fun) and a regular crucible.
Have fun and if you think I can help ask here or off line, but it
was a long time ago.
Analog/Digital Modelling & Goldsmithing