The aluminum wrenches from Tormach were "okay" to start with, but they quickly turned to garbage. Actually the closed one for the nuts are still useable, but the opened one is just about worthless. I've been using a handful of other wrenches from the shop as needed. Its not like I need to change tools every day. Well some days more than once when struggling with a new material. LOL. Still I wanted some clearly marked dedicated wrenches to leave in the drawer with spare tool holders or hang on the machine cabinet (not sure which yet).
So... yesterday I made a set of semi articulating clamps to better mount an air blast on my Hurco mill. It goes on the same adjustment rod as I use for my flood coolant manifold.
Then I machined (mostly) a pair of dedicated ER16/20 wrenches out of some 4140HT (I have a bunch laying around left over from a job). Today if I have time I'll make a mounting setup so I can slice them off on the horizontal bandsaw and grind the back side flat. I know 4140 isn't tool steel, but it should be "tough enough" to exceed the life of the aluminum wrenches.
Oddly I never powered up the Tormach yesterday. LOL. The clamps were done on one of the Speedmasters (and the lathe), and the wrenches were cut out on the Hurco.