- Joined
- Dec 18, 2019
- Messages
- 6,506
My tail stock is marking up the male tapers that are inserted in the tail stock. Thought I'd clean it up, but have run into a problem. I borrowed an MT3 reamer from a fellow member @Aukai and received it recently. This afternoon, I naively inserted it into the tail stock quill and it bottomed early. Taking the reamer out, I see that the reamer cutting edges are about 110mm long. However, this lathe has a short MT3 taper socket. The MT3 dead center I have has a taper length of 75mm. Furthermore, it seems that I re-assembled the tail stock incorrectly, and I can't even insert the short dead center with the quill set to 0. The quill has to be set to 0.5" for the Grizzly MT3 short dead center to seat.
Looking at the tail stock exploded view only shows a plain screw going into the quill. Mine seems to have some sort of extension that extends even further into the bottom of the taper. It appears to be about 1/2" long, or roughly the amount of positive quill offset I need to insert the taper. I don't like giving that up, as the usable quill stroke isn't all that long to begin with, about 2". I had trouble with the reassembly last time, although I don't recall what the issue was. It gave me a bit of trouble. Maybe I threaded the tail stock lead screw in too far?
The quill taper does indeed have issues and should be reamed. I can see the problem and feel the problem with a finger. Don't quite know how to fix the problem without altering the reamer. Since it is borrowed, I don't want to do that! Unless someone has a great idea, I will return the reamer, buy one for myself and alter it. Or I could just buy a new quill, if that made more sense. Seems the quills are $60.50 from Grizzly. Any suggestions?
Part of me wants to repair it, because that's what we do. Part of me wants to replace it, because something's wrong with it, and I'm not sure that it is just the taper. I think the internal threads of the quill may need some attention, I'll check that in the tear down. ($31 for the tail stock lead screw).
Looking at the tail stock exploded view only shows a plain screw going into the quill. Mine seems to have some sort of extension that extends even further into the bottom of the taper. It appears to be about 1/2" long, or roughly the amount of positive quill offset I need to insert the taper. I don't like giving that up, as the usable quill stroke isn't all that long to begin with, about 2". I had trouble with the reassembly last time, although I don't recall what the issue was. It gave me a bit of trouble. Maybe I threaded the tail stock lead screw in too far?
The quill taper does indeed have issues and should be reamed. I can see the problem and feel the problem with a finger. Don't quite know how to fix the problem without altering the reamer. Since it is borrowed, I don't want to do that! Unless someone has a great idea, I will return the reamer, buy one for myself and alter it. Or I could just buy a new quill, if that made more sense. Seems the quills are $60.50 from Grizzly. Any suggestions?
Part of me wants to repair it, because that's what we do. Part of me wants to replace it, because something's wrong with it, and I'm not sure that it is just the taper. I think the internal threads of the quill may need some attention, I'll check that in the tear down. ($31 for the tail stock lead screw).