Indeed there are taper-based ring mandrels. Pretty sure I've looked at every mandrel on the market. For design, functionality and price... this one just happens to be my choice. I was shocked that I couldn't just go to ebay and buy a threaded spindle chuck! There are a ton of faceplate-mountable threaded spindle chucks... that are the female type -- but no male type!!Ok, now we can see the motivation! Presuming that your lathe has a taper. Aren't there similar ring mandrels that use a taper instead? Perhaps you could make one? Or use a straight shank mandrel in a MT2 chuck?
The morse taper mandrels will run true. Remove your chuck and seat the mandrel tool into the taper. No fiddling, no adjustment. Works every time. You will have to drive out the taper when you are done, just use a soft metal rod, like aluminum. A tap ought to do it.Indeed there are taper-based ring mandrels. Pretty sure I've looked at every mandrel on the market. For design, functionality and price... this one just happens to be my choice. I was shocked that I couldn't just go to ebay and buy a threaded spindle chuck! There are a ton of faceplate-mountable threaded spindle chucks... that are the female type -- but no male type!!
BTW, I considered just throwing the ring chuck in the jaws but I suspect precision alignment will be a hassle... every single time I use it.
I also considered mounting a spindle adapter like this in the jaws. But same concern.
View attachment 393862
I expect that you need a 1.5x8 thread to fit threaded back chucks. That said, those are not all that common in sizes that will fit a 7X lathe.
Classic!The Sieg 7" Minila The series does have an MT3 spindle.
Thanks, yeah, I've looked at all (I think) of those but I don't like them as much. They are really common for pen turning and often just an adapted pen mandrel. If necessary, I might end up there... but I really like the design of the spindle version.The morse taper mandrels will run true. Remove your chuck and seat the mandrel tool into the taper. No fiddling, no adjustment. Works every time. You will have to drive out the taper when you are done, just use a soft metal rod, like aluminum. A tap ought to do it.
Or you could make a super mandrel of your own. If I was you, I'd try the taper one first.
Just looked at the docs on the lathe, no mention of spindle taper!Classic!
I looked at the specs and saw the tailstock is MT2 but there's no mention of headstock taper only the bore of 5/8"
Classic!
I looked at the specs and saw the tailstock is MT2 but there's no mention of headstock taper only the bore of 5/8"