BLOCK centering on a 4 jaw...
Posted: Sun Nov 15, 2009 6:34 pm
The second pipe I just finished was drilled on my lathe. I used the various bits lined up to the center points and adjusted by hand/eye until it looked good. The drilling came out almost perfect, especially compared to my first pipe. In starting another pipe I tried the same thing, but something is screwy; every time I bring the bit forward and spin the chuck by hand, one side is way out of whack. No matter how meticulously I get it lined up on the top and side, when I spin it the other side goes out of center. I adjust that side and the other side goes off of center. I'm placing the block flat back against the chuck; is this happening because my block isn't perfectly squared...?