Hi all, very useful and friendly forum. I am planning to build a 42" pompeii brick oven. I found that Pennsy supply sell fire bricks. I am not sure if they carry the heat stop 50. I'll be visiting their store tomorrow. I got a 10" tile/brick saw from Harbor Freight store about $200 with discounts and coupons. Beats buying a used one. I am planning to cut bricks with angles to fit. It is almost mid March here but ground is still frozen so I have to wait till later to start. Thanks in advance if you have any information about where else I can get fire bricks and HS 50.