- Joined
- Dec 4, 2016
- Messages
- 9
Hi folks
I need some feedback on an idea I've had. Forgive my ignorance as I've been forced to earn my living as a Millwright for 35 years .
I'm still checking out my recently acquired old ( single tumbler )14.5" SB lathe
It's in pretty good working condition but the inside of the spindle has a couple small helical gouges where something dramatic must have happened sometime in its life. It came with a collet drawbar but no spindle adapter or collets
Today I set up my taper attachment by indicating the length of the internal spindle taper, then cut a male taper to make an "adapter" that should run true in the headstock.
It doesn't go in as far as it should and it wobbles a little.
I checked the fit with blue and think that whatever spun and gouged in the spindle also slightly distorted the hole and left a burr by the gouge.
I'm thinking if the spindle is not too hard then I should be able to
use a boring bar with the same setup on my taper attachment and clean up the distortion ?
If the spindle is too hard to turn with a 1/2"bar with 1/4" hss bit then perhaps a brass Lapp turned to that taper would eventually work ?
Perhaps this is a common problem ?
Mike
I need some feedback on an idea I've had. Forgive my ignorance as I've been forced to earn my living as a Millwright for 35 years .
I'm still checking out my recently acquired old ( single tumbler )14.5" SB lathe
It's in pretty good working condition but the inside of the spindle has a couple small helical gouges where something dramatic must have happened sometime in its life. It came with a collet drawbar but no spindle adapter or collets
Today I set up my taper attachment by indicating the length of the internal spindle taper, then cut a male taper to make an "adapter" that should run true in the headstock.
It doesn't go in as far as it should and it wobbles a little.
I checked the fit with blue and think that whatever spun and gouged in the spindle also slightly distorted the hole and left a burr by the gouge.
I'm thinking if the spindle is not too hard then I should be able to
use a boring bar with the same setup on my taper attachment and clean up the distortion ?
If the spindle is too hard to turn with a 1/2"bar with 1/4" hss bit then perhaps a brass Lapp turned to that taper would eventually work ?
Perhaps this is a common problem ?
Mike