15 years ago
use it. I have found all the locks but the knee lock. The closest I
have found is two long hex socket cap screws that bear down on the knee
gib, in the company of what appear to be the gib adjustments (long hex
socket setscrews with locknuts). I would have expected something with a
handle, for easy tightening and loosening.
The long hex socket cap screws don't seem to have quite enough thread to
be correct, and don't bear squarely upon the back of the gib (which is
parallel to the dovetail); two more reasons to think that the original
gib locks have been lost.
Does anyone have a manual page that shows exactly how this is
supposed to work? Or a photo or two? Or an exploded parts diagram?
One assumes that there is for one a missing piece that has a slanted dog
point, perhaps made of brass, to bear correctly upon the back of the
gib. Or a 5/16-inch brass ball loose in the hole. I'm afraid to clamp
the gib hard using the current setup, for fear of cracking the gib in
half, from the point load imposed by the corner of the hardened socket
cap screw. Although from the tips of the two cap screws, it seems that
people have been doing just that. The clamp isn't that firm though.
I'd like to have some idea what was supposed to go there, and what to
worry about, before I invent an answer.