Our Fall 2015 Sine Plate Project

[ParisDakar]

Actually we did. The pic was taken later. We started with the spindle, then moved down and measured a collet, then down to a drill chuck.

I wanted to put the indicator rod mount in a drill chuck, but discovered it wobbled on rotation, you could see it easily. So we traced it back up. The drill chuck was out by .008". The R8/morse taper chuck adapter was good, as straight as the spindle. So we knocked off the chuck and found that the morse taper that the chuck was mounted on was all torn up. No wonder we could never drill a clean hole with that chuck.

In the pic, we put the indicator rod mount in a collet (which was a bit too small) just to see how straight that combination was.