Chamber cast substitutes?

[bkbville]

I once found this recipe (perhaps on this forum) for mixing a substance for chamber casting.

2 oz. Sulfur
3 oz. Powdered Lampblack
3 drops oil of Camphor

As I'm not exactly sure where to procure "powdered lampblack" and "oil of camphor"
does anyone have experience with substitutes?

I tried this with straight sulfur once, and was lucky to get the plug out of the chamber - it had stuck so hard... (even though the chamber had been lubed) I suspect the lampblack helps in that regard.

[Czech_too]

Pick up some Cerrosafe, it's easy to use, or reuse, has a low melting temp., available through Brownells, Midway and Rotometals.

[oneokie]

I once found this recipe (perhaps on this forum) for mixing a substance for chamber casting.

2 oz. Sulfur
3 oz. Powdered Lampblack---Powdered Graphite
3 drops oil of Camphor---Pharmacy

As I'm not exactly sure where to procure "powdered lampblack" and "oil of camphor"
does anyone have experience with substitutes?

I tried this with straight sulfur once, and was lucky to get the plug out of the chamber - it had stuck so hard... (even though the chamber had been lubed) I suspect the lampblack helps in that regard.

There are 2 different formulas on this site,
One calls for 2 parts sulfur and 1 part powdered graphite.
The second calls for 3 parts sulfur and 1 part powdered graphite.

Use caution when heating the ingredients, as the sulfur will catch fire easily and the fumes are toxic.