I Got a Rock: Actually, 4 of Them

[rbtdanforth]

One of my earliest thoughts about what to do with a Glowforge still six months before mine arrived…

Glass, Ceramics, Silicon carbide, formulas?

I have been thinking in terms of a very low coefficient of expansion solid made from powders of ground glass or mixed materials like a mix of sugar, kaolin, and sand, or many similar possibilities. If the powder is fused the part not fused can be washed away by water leaving a fine lattice of fused material. If the lattice is silicon carbide (sugar & sand) it could make a great high temp heating element capable of temps in excess of 2k degrees F. The first question, of course, is the ability to …