Quote:
Originally Posted by Archie Zietman  are there substitutes to firclay which work as well? |
cat litter (
bentonite clay)
but it needs to be ground
Quote:
Originally Posted by Black Ink Can I make the grog myself If I cant find It?Or is there a sub I can find @ home depot. |
grog is a clay\ceramic that has already been fired, if you have a local potter, his broken\exploded pots would be ideal, again needs to be broken up to a suitable granular dimension
other insulative additives
Vermiculite
Sawdust (the coarser the better, chainsaw particles are ideal) turns to little charcoalized insulative pockets
additional insulative barriers will make the forge\kiln\furnace more effcient, a box in a box or barrel in a barrel with rock wool, Vermiculite or other air trapping fireproof material with a low thermal mass
the more thermal mass the forge\kiln\furnace has the more energy it will take to get it up to a given temperature, but the better it will hold that temperature (principle behind a
masonry heater) but unless you plan on leaving it on for days at a time, its better to have a low thermal mass with a high insulative value