shippable core idea

Shippable core, I'm just watching this for the first time,  and this is probably been thought of before but since the refractory insulation board seems to be hard to find, that if there was a kit was available with pre-cut boards for a firebox and a riser ,that could just be assembled.  Then could be shipped in a smaller lighter box. Whoever ordered it could add there own firebrick  ,brick and all the other parts.

Been done,  look here ,   walkerstoves.com    Matt offer's as much or as little as you want.  Just plans or more.

Thanks, I'll check it out,