Chipper5783
Well-Known Member
I’ve had this chuck a long time, the gripping section is getting a bit uneven. The jaws were bell mouthed ~0.003” radially. After watching Robin’s video, I felt I could do that.
As has been much discussed, the biggest challenge can be setting up the loading arrangement. There are a few options. Since I have two piece jaws, I made a ring that uses the inner jaws bolts. The project took a bit of thinking. I was concerned about making the ring too stiff and would not mimic typical jaw deflection (per Robin’s comments) - I ended up skimming the ring down thinner than the initial version.
The actual cutting was pretty straightforward. I simply a purchased a TBC insert ($8) for my 1/2” carbide BB. I ended up removing 0.006” radially, which cleaned the gripping surface to about 95% pristine. TIR just under 0.002”. I still have to clean everything up - pretty happy with the result.
As has been much discussed, the biggest challenge can be setting up the loading arrangement. There are a few options. Since I have two piece jaws, I made a ring that uses the inner jaws bolts. The project took a bit of thinking. I was concerned about making the ring too stiff and would not mimic typical jaw deflection (per Robin’s comments) - I ended up skimming the ring down thinner than the initial version.
The actual cutting was pretty straightforward. I simply a purchased a TBC insert ($8) for my 1/2” carbide BB. I ended up removing 0.006” radially, which cleaned the gripping surface to about 95% pristine. TIR just under 0.002”. I still have to clean everything up - pretty happy with the result.
