I find that the only way to get a decent sized pick for a Yale is to go with the smaller junior hacksaw blades, and ground right down to almost sawing needle thickness, in order to get a pick that will get passed all the protrusions in the Yale locks face..
The metal is just too thick and bulky on the normal sized hacksaw blades...
However with it being thicker and a bit tougher, it makes a better torque tool metal than the junior hacksaw blades do.
You try putting a shaped end of a junior hacksaw blade into a key whole as a torque tool and watch it bend and be useless lol..
Personally for torque tools what I have done if get some sturdy eating forks out of the kitchen heated two of the prongs up and bent them into torque tools, while cutting away the 3rd prong

Nice stiff metal that doesn't bend

Regards Hyperion