I'm in the process of "gearing up" to build a plane with 4130 space frame and wood wing. I've bought a reasonable mitre saw for the wood, and abrasive cutoff wheel for the tubing. Since then, I've found a 77 tooth carbide tipped blade that will fit the saw,, says it's only for mild steel. Any body know why this could be a problem with 4130 tubing .035 - .049 wall thickness?

As to the wood wing, anybody know where/how to buy Aerolite? It's for sale all over the UK, and none of the stores there will ship it to the US for some reason. Canada, maybe?

TIA

bk