Thowax casting pins 6 mm, pack of 250 pieces

Casting pins
Wax casting - pins with a lost head.
During the solidification phase of the metal, a contraction takes place. In order to compensate for this and the resulting negative pressure, liquid metal is sucked out of thicker layers. With this knowledge, the idea of ????the "lost head" was born. This is located on the casting pin in the center of the muffle and serves as a shrinkage reservoir.