09-18-2017, 03:25 AM
On the weekend I had the 4 jaw chuck mounted for the first time since getting my current lathe.
Its a Rohm brand - around 14" (350mm) diameter, and as I've found out its a "heavy duty" model. The gripping face of the jaws is about 12mm wide and it can't grip anything smaller than about 30mm across.
The 3-jaw (also Rohm) is approx 10" and closes up pretty tightly so no such problem with that.
So I'm looking at options for smaller size 4-jaw work.
Firstly, I guess I've got the option of re-grinding the 45deg face on the jaws so they close tighter, but I'm wondering if I'll regret that down the track.
Next option would be to get a small 4 jaw (perhaps a 4 or 5"?) and just chuck it in the larger one.
Lastly, I could just buy another medium size 4-jaw ( 8 or 10") which would probably cover most of my work, and be lighter and easier to handle than the current one. Would mean sorting out a D1-6 backing plate to mount it which would be a bit of extra work/cost.
Pity I didn't realise about this chuck before I sold my old Hercus lathe, or I would have kept the 6" Bernerd chuck that went with that
Anyone care to throw other thoughts into the mix?
Steve
Its a Rohm brand - around 14" (350mm) diameter, and as I've found out its a "heavy duty" model. The gripping face of the jaws is about 12mm wide and it can't grip anything smaller than about 30mm across.
The 3-jaw (also Rohm) is approx 10" and closes up pretty tightly so no such problem with that.
So I'm looking at options for smaller size 4-jaw work.
Firstly, I guess I've got the option of re-grinding the 45deg face on the jaws so they close tighter, but I'm wondering if I'll regret that down the track.
Next option would be to get a small 4 jaw (perhaps a 4 or 5"?) and just chuck it in the larger one.
Lastly, I could just buy another medium size 4-jaw ( 8 or 10") which would probably cover most of my work, and be lighter and easier to handle than the current one. Would mean sorting out a D1-6 backing plate to mount it which would be a bit of extra work/cost.
Pity I didn't realise about this chuck before I sold my old Hercus lathe, or I would have kept the 6" Bernerd chuck that went with that
Anyone care to throw other thoughts into the mix?
Steve