marking out pcd's

Being more of an Old 'Codger' (than an Old 'Bodger' John - frankly I doubt you would have hired me in the first place. (with Smilely!)

After all by the time you had finished this - I'd still be faffing around looking for (the correct threaded) bolt (or bolts) to cut into three suitable lengths, then I'd be digging out a collet chuck to hold them (being too short to grip securely in the 3J without damaging the threads) - setting over my top-slide (which I spent 10 minutes last week making sure it was really true) to turn the screw ends into 'points' before I could actually start on your method (which I agree is a simple one). In my workshop by this time of course, I would have mounted my angle plate, trued it using the faceplate, lined up the chuck and be drilling my first or second hole.

Later (using your approach) when I came to drill the holes in my drill press - Sods Law would decree that the back-plate is a casting that has a tapered nose on the back end and (being a complete novice) I'd probably faff around some more worrying about how to hold the back plate true in my vice without any 'rock' - my vice of course not opening wide enough to hold the backplate's outside diameter. Being a complete twit - more faffing about would undoubtedly follow.

So, No - I don't think I would have got the job in the first place..

Fortunately (unlike your good self) I don't have to make a living at this game - I just have to enjoy it in my own spare time - which I most certainly do.

(and that's another smilely!)

Regards,

IanT

Won't work john,

He's got four screws on his chuck <ducks>

Neil

The pointed grub screw method works really well for lots of applications....keep it simple..👍