Graphite

Graphite is a black carbon based material used in lampworking as tools for shaping and molding hot glass. It does not leave any residue on the glass and does not stick to the glass. Both soft glass( soda lime )and hard glass( borosilicate )glass can be worked on graphite tools. Graphite is really just a very high grade of pencil lead. It conducts heat, so the graphite tools you use will get hot and transfer heat throughout the tool you are using. If you are using a graphite rod with no handle on it to flare a tube, for example, the end you are holding may get hot before you are finished with your application. Marble molds that are left on wooden blocks during use may burn the wood if the mold gets too hot.

Graphite is carbon based so, while it can take extreme heat, it also begins to break down and vaporize at extreme temps. It is not recommended for high temp in kiln applications.

Graphite comes in many grades and densities. The higher grades of graphite will hold up longer, but they are more costly.

Many tools can be made from graphite. Marvers, molds, paddles, pokers, mashers and pushes are just a few examples.

Graphite is a dirty material to work with. It is best to use a shop vac when sanding, sawing or grinding. The dust is non toxic, and you will pass it from your system if you inhale it. But it is always a good idea to wear a non toxic particle mask when you are creating graphite dust.