I took a different approach....

I cut this Sugino AT crankarm years ago before I returned to C&V biking. (I know, how could I?)
I needed to modify it to create a spanner to install a spring seat to a Macpherson strut for my exwife's car.

I found it a few years ago and made a whip because I was in need of a 2nd one to remove Suntour freehub cassettes. It got a 2nd life in my tool box.