Need some help I am thinking of building a firebrick forge. I was going to use 4 hard firebricks for the floor 4 k-23 IFB for the walls (2 on each side) 4 k-23 IFB for the ceiling Question 1) should I put something on the the IFB to help protect it and help with insulation? I know I can get Vesuvius super 3000 locally and was thinking a thin layer may help. I am going to hold everything together with angle iron and all-thread. A peace of sheet metal on the top to mount the burner or burners to. Question 2) should I use 1 or 2 burners? I am going to make burners just have not looked into it very much yet I know lots of people say to use something round to make a forge. This will be the first forge I build and I want something easy to make and move around. Thank you for any help you can provide.