What kind of fire bricks are these?

S

simko

Joined
Jan 14, 2003
Messages
1,638
WEnt on a fire brick run, got 2 different kinds

some smaller ones which are maybe 1.5" thick, and some bigger ones which are maybe 2, or 2.5 x 4" and 7 or 8 " long


i think the big ones are soft ones for a forge, but how soft do they have to be?
 
You should be able to carve it with a screwdriver fairly easily for it to be soft. Are you using propane or solid fuel? You want the soft for propane but hard firebricks are good enough for solid.
 
I was going to do propane, i attacked the brick with an old knife, and its taken me 5 min to get a dent in it thats 3/4" by 3/4" deep
 
hmm, this one isnt too hard to cut, but im not sure if it cuts like drywall
is there a way to visually tell?

mine has different fibers of stuff in it, some red bits
 
Soft firebricks are so soft you can chew through them and not notice it.

Don't.

Peter
 
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