I was working on something to show you how to model these threads and was about to cut them in the center of the block when I noticed that the blind holes aren’t equally spaced on the block. Is that correct? I’ll wait to find out before proceeding.
FWIW, from poking at your model I guessed that the hole is supposed to be for a 14x3 screw. Is that right?
Also for what it is worth, here is the setup waiting for the cutting to be done. I’ve drawn “cutters” for the chamfers and of course the “tap” for threading the hole. They are positioned in the block ready to go but you can see on the top that the chamfer cutter will get into the blind hole on the left. I can make the chamfers shallower but they aren’t very wide to begin with.
Edit: I also notice that the channels at each end are different in width. Is that by design? While waiting for you to come back I moved the blind holes so they are equally spaced and went ahead and cut the threads and chamfers.
