This brick is 4" x 9" and 2.5" thick. Lightweight, soft insulating bricks are great for torchwork such as firing PMC or Fusing fine silver wire. Soft brick can easily be cut without special saws or tools.
Kiln Brick Vs. Charcoal Block
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Works well for soldering. Tried having it under my trivet during torch enameling but found that sometimes I ended up with little white pellets from the brick in my enamel.
Seems like a very good kiln brick! I've used it several times with great success.
This greatl for annealing metal on. I put it on a flexible mat used for baking cookies as little pieces do chip off, it makes for an easy clean up. It gets hot, so remember not to touch it immediately after using with a torch.