Me, too Ed. I still own an Enco mill.
I'm thinking I'd like to remake that screw, or all of them some time. That's not a problem, but getting them out and back in looks like it might be. The screws are retained by plugs, which are either press fitted or threaded into the chuck body. I can't tell which. There are inset allen screws at the perimeters of the plugs as retainers.
If those plugs are pressed in and the allen sockets were drilled and tapped after, then it seems like it would be nearly impossible to realign well enough to press the plugs back in place and have the retainer threads line up.
If the plugs screw in, that would be much easier. Or if they were a close sliding fit. Doesn't seem that way though, I took out one of the setscrews and the plug didn't budge when tapped lightly with a drift from the front face.
The plugs are drilled and tapped in the center, presumably for a stud to pull, or to trap with a stop nut if the plug is screwed in.
Here's a photo of the back of the chuck:
I'm thinking I'd like to remake that screw, or all of them some time. That's not a problem, but getting them out and back in looks like it might be. The screws are retained by plugs, which are either press fitted or threaded into the chuck body. I can't tell which. There are inset allen screws at the perimeters of the plugs as retainers.
If those plugs are pressed in and the allen sockets were drilled and tapped after, then it seems like it would be nearly impossible to realign well enough to press the plugs back in place and have the retainer threads line up.
If the plugs screw in, that would be much easier. Or if they were a close sliding fit. Doesn't seem that way though, I took out one of the setscrews and the plug didn't budge when tapped lightly with a drift from the front face.
The plugs are drilled and tapped in the center, presumably for a stud to pull, or to trap with a stop nut if the plug is screwed in.
Here's a photo of the back of the chuck: