Being unsure I could properly layout the mounting screw pattern to match the back plate to my new 8" 4-jaw I decided to make some 4M10 transfer screws. Starting with a couple of 2" allen head screws I turned the head to match the body size so I'd have more to chuck up. Flipping the bolts around I turned a small point on the end then parted off about 1/2" LOA.When I was trying to clean up the threads with a triangle file I found it a pain to hold on to such a short screw. Being a Yank, if I'd been dealing with SAE threads I could have tapped something to hold them quickly but the only metric tools I have are a few wrenches and a set of allens. I've plenty of visegrips, hand vises and such but nothing that wouldn't mess up the threads.
To meet the challenge I made a little wooden hand vise from hard wood dowel. I center drilled the dowel with a 'W' drill which is the closest under sized drill I have then slitted it with a hacksaw. A several turns and a couple of half hitches of piece of window blind pull cord clamped down on 1/4" of that screw so that it didn't budge when filing. Having been a scout and sailor I find so many uses for cord and rope in the shop that I feel sorry for folks that don't know to use it for anything but tying up packages.
Using a hacksaw and file I put flats on the screws to insert and extract them. I could easily make a driver but will probably just use a pair of duckbill pliers.
MikeMc
