I've been making experiments with loose laminates for a while, mainly with old saw blades, and the results seem promising. With <1mm thick backsaw blades (300mmx3mm) i managed to get a neat little 22# @ 185mm (7-1/4') prod for a pistol bow. The low weight is sort of balanced by the relatively long power stroke of 5-1/4', and it is a sweet shooting toy. Link to that here:http://thearbalistguild.forumotion.com/t1365p15-small-pistol-crossbow#13133
So now i'm thinking on doing a more serious version of the loose laminate prod, for a medium sized bow i'm planning. I've got access to 2mm and 3mm thick spring steel strip (C67 S), the thing is I'm not sure what kind of draw weight to expect from a single strip, around 650mm ntn (25').
I'm aiming for around 100#, so my question is, anyone got any idea how much power one can squeeze out a 3mm or 2mm thick strip of spring steel (50mm wide for the 2mm and 30mm wide for the 3mm)?
Any advice, on that or on the loose laminate general topic, is most welcome!