I will want to make (or have made) some delrin parts. It could be ongoing production if the product sells.

I'm new to CNC so working this out from scratch! As the part has features both sides, and some of those features are 4x M4 screw threads, I was thinking this:

Say the part is 58x58x25. So, get a 250x250mmx25mm sheet and clamp that. Then drill all the holes for threads and cut the features on that side. Remove from table and press fit the inserts (if that's the method). Then use those threaded holes to fix the sheet to a jig (just a sheet with matching holes) . 16 items times 4 screws each (or maybe 3 or 2 ??). Clamp the jig and set zero somehow. Cut the 2nd face features and cut the parts free.

Is that right?