[popspipes]

For locating pin holes I first drill then single point bore and then using this floating reamer holder I built using a 3/8" TTS holder ream to size.

Don

I like your floating reamer holder!, may try to make one for myself......
I also like your indicator holder that fits in the spindle with a dovetail assembly at 90 degrees, I have looked on ebay etc but havent found one like yours, very good idea Don