I have not used a debubblizer for years. I use Satin Cast 20 for my
investment. When it is properly vacuumed, and the waxes are kept
clean, I don’t get bubbles.
I don's understand why "straight" denatured alcohol works as a
If it works, it is cleaning the wax rather than actually
debubblizing. I have heard several casters say they rinse their waxes
Maybe if someone handling the waxes does not have especially clean
hands this could make a difference, but in my shop we have up to five
different craftsmen who may be touching the wax before investment. We
don’t wash them or use a debubblizer and rarely have bubble problems.
They have been trained to wash their hands if they have been buffing
or eating jelly donuts before they handle waxes.
The more sophisticated prepared investments, like Satin Cast, may
have an additive that makes a debubblizer unnecessary, or maybe it is
just a holdover from before the time when vacuum pumps were commonly
used. I cannot see adding a step that requires a long wait for the
stuff to dry, or the risk that it may not be dry, when my casting are
turning out just fine without it.