Simple enough, now I've manually prepared the stock.This is a circular pattern of M5 tapped holes and two rows of M5 clearance holes, with counterbore to accommodate a cap head screw. Should be simple enough:
Tools set up, ready to go:
Stock set up and probed:
Circular path, to cut out the middle rather than turn the hole centre into swarf.
7mm holes for M8 tap.
Spot drill the hole centres to avoid wandering
Then drill tapping and clearance holes.
Done. Now for some tapping....
Done - apart from the tapped holes in the end face that hold it to the baseplate. Nice result.