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Posted: Tue Dec 07, 2010 10:21 pm
by ljhhontx
JPG40504 wrote:I am curious how you got the hole drilled at a right angle to the quill shaft bore from 6" away and so close to the disk.
You gots very long drill bits?
I said it was "reasonably" straight not "perfectly" straight. I used a 1/4" chuck air drill that had the least amount of "fat" above the shaft of anything in my shop and held it up against the plate as tight as i could. Have used the disc several times tonight and noticed no problem with the reasonably straight set screw.
Posted: Tue Dec 07, 2010 11:22 pm
by JPG
ljhhontx wrote:I said it was "reasonably" straight not "perfectly" straight. I used a 1/4" chuck air drill that had the least amount of "fat" above the shaft of anything in my shop and held it up against the plate as tight as i could. Have used the disc several times tonight and noticed no problem with the reasonably straight set screw.
I was hoping(thought maybe) you used a hex shanked bit and a hex shank extension. That be what I considered doing to adapt a couple 10er alum diskc to Mark 5/V size set screws(the 10ER are 3/16hex, 3/8-16). With both sizes on the disk, they can be used on either machine and use the 'typical' hex wrench. I do not have the 'extension', so I have not tried it.
Posted: Tue Dec 07, 2010 11:54 pm
by ljhhontx
JPG40504 wrote:I was hoping(thought maybe) you used a hex shanked bit and a hex shank extension. That be what I considered doing to adapt a couple 10er alum diskc to Mark 5/V size set screws(the 10ER are 3/16hex, 3/8-16). With both sizes on the disk, they can be used on either machine and use the 'typical' hex wrench. I do not have the 'extension', so I have not tried it.
Hadn't thought of that, closest I could have come to that would have been an old Irwin drill bit extension that I have somewhere, haven't seen it in a while so it didn't come to mind. I have been thinking of tearing down an old 1/4" drill and using the motor shaft with chuck as an extension for smaller bits that the 1/2" chuck seems to have trouble holding straight, that would have been perfect for this job, but the air drill got it straight enough that it is not noticably crooked in any way.