36 inch homebrew oven in SoCal

[Warhorn6]

Well looks like the cling wrap worked in keeping the 2 sections from bonding to each other. I was able to demould and seperate them pretty easy. Now its actually looking like it might work. Would it be better to fill the seams with perlcrete or a homebrew mortar?

[Warhorn6]

I was finally able to cast the underfloor insulation with 5:1 perlite/portland cement. Hopefully i can set it on its final resting place without it breaking. I feel like it could of used more cement since it seems quite fragile, but the ratio has been used by so many other builds so it should be alright.

[UtahBeehiver]

This is the right ratio for floor strength and insulation properties, any more portland reduce insulation value.

[Kris S]

I feel like it could of used more cement since it seems quite fragile, but the ratio has been used by so many other builds so it should be alright.

I thought the same, at first you think it's never going to hold up. but once dried it's deceivingly strong, I had to partly remove/chisel away the front corners for my enclosure walls, and was surprised how sturdy it was!