Put together a display of some of our instruments in the school for students and others to see as school gets back in session.  Tried casting a brass bell.  The ~2000 degree brass did melt away some of the plastic, but the brass cooled off too quickly so it became solid before brass could melt away all of the plastic.  In the future the bell will have to be cast with a 1 layer thick outside shell and minimal supports to the metal can burn the plastic off before cooling too far.  The other option is to use a 3D printed mold for the pewter or a 3D printed mold to create a wax bell that can then be melted away with the brass.

20160905_204930.jpg

Advertisements