thread Don't really know. Wood, probably.
And perspex.
permalink 50mm Corten Steel?
permalink It'll do 3mm of ply.
Anyway, I've ordered one.
permalink How much?
I too have a burning (sorry) desire for one, albeit with no real need or justification of any sort.
permalink About £250 from Ali express with a UK warehouse.
I expect to spend another £100 getting it working properly