JPG40504 wroteSince the 'lock' is squeezing the tube from the 'sides' the od really doesn't matter. Here I go thinking Mark 5 when you are working on a 10E/R!:o So tell us how the 10 E/R locks work. Do they have RH/LH threads????
Didn't see this post until tonight. The type of lock on my ER is the
one piece right hand thread show in this post.
https://forum.shopsmith.com/viewtopic.php?p=40357&postcount=28
It threads into the headstock. This style lock doesn't
squeeze the side of the OD but instead
biases the tube against the inner surface of the bore in the headstock. There is only one lock on the ER.
I calculated the error due to the tube OD being reduced by about .004" to sand the pits out and the error is negligible (few hundredth of a degree).
If I were to do another set of tubes, I would probably bring them to a machine shop and have them turned down on a lathe instead of hand sanding. Not only was it time consuming but it's probably not the healthiest of processes. Without a respirator, you end out getting the taste of metal in your mouth the next day which means you inhaled more than you should have!!
