I have had a 1b for about 10 years after I went to buy a lathe and had to buy the mill to get a southbend 13. I am not a machinist by any means. I saw this forum and rigured I would ask this question here.
I have about 3 Cinnci collets and have been using a 1-1/4 shank ER40 holder for most of my work. I was recently in Ohio visiting relatives and talking to a gentleman (80’s?) who was a retired machinist. He thought with the old 1b that folks would take a 40taper with a bored hole and press it into the quill and then turned.
Looking at my spindle, the ER40 collets are the same taper, they just go in to far. I thought this could work by moving the taper down so that the collet was at a more appropriate depth for the nut. Whether a new nut would need to be made, or just a hardened washer added to the bottom with the ER40 nose taper, I don’t know. I doubt there is enough meat in an ER40 nut to turn out the M50 threads to the 2-1/8x16.
So do ypu think this is feasible, would a boring bar setup on the table give enough accuracy to lightly turn out the adapter (with the head tilted at the taper) ?
Thanks for your thoughts
I have about 3 Cinnci collets and have been using a 1-1/4 shank ER40 holder for most of my work. I was recently in Ohio visiting relatives and talking to a gentleman (80’s?) who was a retired machinist. He thought with the old 1b that folks would take a 40taper with a bored hole and press it into the quill and then turned.
Looking at my spindle, the ER40 collets are the same taper, they just go in to far. I thought this could work by moving the taper down so that the collet was at a more appropriate depth for the nut. Whether a new nut would need to be made, or just a hardened washer added to the bottom with the ER40 nose taper, I don’t know. I doubt there is enough meat in an ER40 nut to turn out the M50 threads to the 2-1/8x16.
So do ypu think this is feasible, would a boring bar setup on the table give enough accuracy to lightly turn out the adapter (with the head tilted at the taper) ?
Thanks for your thoughts