PierreR,

That's one sweet looking forge build!

Just curious, how will you line the interior with the cement? Are you going to build some type of form and then pour it in, or mix the cement thicker and paste it inside with a brush? If you are building a form, I'd love to see a pic of it.

Also, are there usually local suppliers or hardware stores that carry refractable cement, or do you normally have to order it?