Sourcing Blades for Scroll Saws and Jewellers, Piercing, Coping, & Junior Hack Saws

[whatknot]

Although your machine takes 6 1/2" coping saw blades I suspect it was intended for use with standard pinned scroll saw blades

Just to add, on the Multico the tension is at the top at the back, the Nutool probably underneath, its usually a matter of turning the tension knob tighter for standard length blades

 

[scrimper]

I agree with what 'Whatnot' says - that your saw is designed to take standard pinned blades. The machine was available under many different brands and guises, I believe that Axminster sold a version at one time.