FireCast Castable Refractory Cement Mix 3110 Degree Fahrenheit 20 Lbs High Temperature Heat Resistant Fireproof Mortar Build Repair Pizza Oven Fire Places Forge Kiln Stove

I tried another brand before this, and found them to be GRITTY and inconsistent with bonding and likely to be very weak in tension. Girtech, however, is very smooth, mixes well without voids, and really sets up hard (particularly if you use reinforcing framework) and strong. I would say that pound for pound, Girtech mixes more product volume. Unlike the competitor, Girtech has a second ingredient bag inside which must be mixed carefully. Sets up very hard and very strong quickly! Very smooth end result!

Like my headline says read the directions! We did not so sadly this product did not work for us.

Used it to make a kiln. You may want to add more water than it says in the instructions. I also didn’t exactly follow its instructions for heat curing but did my best by slowly heating it. It has performed really well. Very strong, still uniform and no cracking. Heated to 2900 degrees and it didn’t care. Good stuff. I also ordered the 20lb bag and they sent me a 30lb bag. No complains here as I used it all.

Don’t even waste your time it’s actually the worst thing I’ve purchased. I think actual dirt with water would do better than this.

this is NOT CEMENT! this is fiber reinforced concrete. big chunks of aggregate and even bigger clumps of fibers- which ruins the finish. NOT GOOD AT ALL for molding. I have no earthly idea why this is marketed as castable. it is so brittle until you fire it. I don't know of any molds that can take the heat. it broke apart trying to de-mold it and I followed the directions perfectly. What a WASTE of money. this stuff is way too expensive for how garbage it is.