Quill run out is approximately 0.010mm - should be <0.002mm. Chuck runout is anything up to 10x this. Your holes may be oval!
9 Aug 2013 - sjrapid and will took the arbour and chuck off, and tested the quill run out with a dial indicator. Also tested with a new certified chuck and arbour (0.0012 TIR). Measured run out of about 0.25mm on the new chuck. TIR not measured on the existing keyless chuck.
We now have a drill press. The keyless chuck only goes down to 2.7 mm, so we need to get a "pin chuck". Russsss found one at the Crystal Palace workshop apparently, but I don't know where it is.
Or you can use the Dremel and mini-mill for high speed / light duty / precision stuff, and this one for everything else.
Ideal jobs :
- High speed, tiny bits e.g. PCB drilling
- Milling plastic, small aluminium etc.
- Drilling jobs requiring accurate positioning - use the table positioning
- Most general purpose drilling jobs
- <lovelace_> The chuck for the new stand drill falls out easily
- <lovelace_> I can't see how it tightens up
- <artag> it should be a taper. Assuming it's clean (not got anticorrosion varnish on it) then it should want a good fast whack up into the quill. Not with a hammer - just push it fast, by hand. Use the momentmum of the chuck to get it in hard.
- <artag> if there's a screw thread in the end of the taper thrn it can use a drawbar like the 3-in-1 but that's fairly unlikely
- <lovelace_> K, seems firmly in now