islandturner
Member
A year ago, I bought a set of pin jaws for my Super Nova Chuck. They look like this:
I alternate with the 50mm jaws that came with the chuck, installing whichever set I happen to need. Recently, I've been having trouble drilling blanks in these jaws – the bit wobbles significantly during the drilling. Yesterday, put the dial gauge on them. On the outside of the chuck itself, the 'wobble' is about .002 – pretty good. On a perfect rod locked in the pin jaws and on the outside edge of the jaws themselves, they seem to be out approx .02 or even a bit more, which is really bad. Hence the drill bit wobbling -- it's trying to drill through stock turning in an oval.
I fooled around for about an hour, trying to see if there is a way to align them to remove this, but can't see it if there is. The numbering is correct. I try cinching the jaws while the attachment screws are loose; then tightening them. Nothing seems to make a difference.
I'm back to drilling at the drill press until I get this figured out.
Has anyone else experienced this?
Steve
I alternate with the 50mm jaws that came with the chuck, installing whichever set I happen to need. Recently, I've been having trouble drilling blanks in these jaws – the bit wobbles significantly during the drilling. Yesterday, put the dial gauge on them. On the outside of the chuck itself, the 'wobble' is about .002 – pretty good. On a perfect rod locked in the pin jaws and on the outside edge of the jaws themselves, they seem to be out approx .02 or even a bit more, which is really bad. Hence the drill bit wobbling -- it's trying to drill through stock turning in an oval.
I fooled around for about an hour, trying to see if there is a way to align them to remove this, but can't see it if there is. The numbering is correct. I try cinching the jaws while the attachment screws are loose; then tightening them. Nothing seems to make a difference.
I'm back to drilling at the drill press until I get this figured out.
Has anyone else experienced this?
Steve
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