sunnybob":1a2o89v1 said:
I've worked with dangerous machinery for well over 50 years, I wont even wear rings or any other jewellery.
spoil sport. I love my manacle, granted it started out as a watch with a lovely metal strap, till I put an arc through it when MMA welding a 1/4 plate. I did cut it off later that day, left a nice ring round my wrist for a few months, can't see the scars anymore though.
When I went to uni, we got sent to the local technical college to learn how to do some stuff (because even managers need to know a few basics apparently), day 1, I turn up in workshop clothes, because I grew up in one, so a light weight shirt with a button half way up the arm to hold a sleeve out the way and hard wearing trousers/safety boots, most the rest rock up in hoodies and trainers (excluding a mate who was working in a metal punch factory at the time so had learned the hard way), anyways, by the end of the day I still had my shirt on (granted I'd been laughed at in the morning though), in the most part, they went home with sleevless hoodies. they didn't catch them in anything, but the lecturer (foreman of the shop really) wandered round with a pair a sheers in his pocket, if he caught you at a machine with your sleeves down he cut them off. the next week everyone turned up in T shirts or shirts, we did hand filing that week because he was a turnip with an evil sense of humour, nice guy though.
anyway, cool story bro and all that, back to the drill stand, checking run out as above will work but won't tell you what is out of square, if it's the drill in the collar, the chuck, the head on the column or the column on the base, all of which will be adjusted in different ways and flex in different ways. I'd mark a line down column then set that forward, clamp a square on the bed then measure back to the line with a caliper, adjust to square, thats part 1. fit the drill. Clamp a rod of known straight (roll it on a flat surface) in the chuck and use a square to get as close as possible to perpendicular to the bed. now use those calipers again to measure back to the column, rotate the chuck and do it again for both things. adjust to as close as you can and that's part 2. now move the head up or down the column and repeat part 2, see if it changes, thats part 3. so part 1 is obvious, it gets the column and the bed at 90, part 2 is about the drill being at 90 to the bed and parallel to the column. part 3 is about the head travel being parallel to the column and is the hardest to adjust.
have fun, I have a cheap version of that which I use with big clamp and the base spun round for drilling holes in big stuff that I want to be close as possible to 90.