Not sure if this is interesting, but i though of showing how I am using it.
I'll keep the story short. Hope it's clear.
I need to make two different size rope pulleys, only few smaller ones but over 10 bigger ones. Desided to make small ones first and just some big ones and then rest in two batches, just to make sure I don't exceed any dimenssion and tolerances won't accumumulate anywhere. Would be annoying to remake another batch of 10 because one feature would be 0,3mm too small or shave of extra 0,5 mm on everyone.
Aynyway, this is first time I use POM on that size and tolerance. All is made out of 1 metre long 50 mm OD rod.
First near 20 mm "pucks" are cut with band saw. Exact width does not matter as long as there is enough to make the boss (17,5 mm wide).
Then puck is put into aluminium collet that has a recess. The collet face that is towards the three jaw chuck and collet recess indexes the puck in relation of the carriage stop. Carriage stop has two postitions. One that much out that first face/boss is cut on one go.
I made a gang tool that has two 1/8" HSS bits set very carefully to cut boss and side on one stroke.
The puck is removed from the collet, turned and freshly squared side will butt to collet recess. Now I can cut it into exact width: cariage stop advanced and another face is cut + hole drilled. Here I know that the side target measurement is 15,5 mm wide (boss width 17,5 mm) Therefore side feature should protrude 3,5 mm out of the aluminium collet. Fast check.....but temperature, collet pressure, burr + other error sources will crop up here, no point trying to "improve" better than necessary.
This has been repeated until batch of five is ready.