I am doing silver casting that has some very small holes I would
rather put in during the wax process rather than have to drill after
the metal is cast. Is there something I can use to “keep the hole
open”. I find that when the hole is particularly small, sometimes the
investment doesn’t flow into these little spaces.
I have heard that there is a metal which can be used which will not
"stick" to the silver and can be pulled out after the silver has
cooled. If true, what kind is it and how can I get it?
Also, I am just starting to supply my home studio (most of my work
is done in a lab at school). Is there some sort of investment that
"self debubbleizes" so that I can do that portion of the process at
home without access to the bell jar?