Rather than insane, I prefer the description 'quaint' 


But to return to the point.  If you want to make an infill, you just double
dovetail some steel together, and add a blade and tote.

The archives have many postings on the topic 


Richard Wilson
Yorkshireman Galoot
in Northumberland


 

On 24 Oct 2014, at 18:49, Jeff Oberg wrote:

> What I know about steel would probably fit on two matchbooks. That said Google
is helpful. Steel strapping is usually selected for toughness and strength
rather than hardness. The exact type of steel isn't listed any where I can find.
Given its primary use I wouldn't expect it to be a tool steel. Fortunately there
is a source besides hack saw blades. Bandsaw blades, jig saw blades, utility
knife blades, concrete nails, and many other things can be annealed, shaped,
hardened, and tempered. I don't have a charcoal grill al home any more but I
have been seriously considering setting one up just to anneal some concrete
nails for tool making and woodwork.
> 
> I tell you the more I get into Galoot pursuits the more metal working I am
doing. I'm thinking about teaching myself casting so I can cast beds for infill
planes. I must be insane.
> 
> Jeff