scott dimelow wrote:Does anyone know of a 3" csa rocket heater that's worked? I could start from scratch with my design, and use refractory cement for burn tunnel and riser. But if it's useless on a small scale, there's no point.
sunglasses are a type of coolness prosthetic. Check out the sunglasses on this tiny ad:
HARDY FRUIT TREES FOR ORGANIC AND PERMACULTUREhttps://permies.com/t/132540/HARDY-FRUIT-TREES-ORGANIC-PERMACULTURE