I have found the Tail Stock getting in the way to be a common problem when cutting lite tapers with the compound. I made a #2 size pulley wheel for the drive side of the Tool Post Grinder and to give the pulley a crown in the middle I put the compound at 1.5 degrees off parallel with the lathe bed. I had to extend the tailstock quill almost the full 4" travel to get enough room to clear the compound crank just enough to advance the cutter. I was turning between centers with the work on a mandrel. One way it would seem to help when it comes to the TPG would be to use a larger grinding wheel so you can put more distance between the compound and the work. Just curious what Lathe you have? Size?
I was aware of the good practice of covering the lathe ways when doing anything in the grinding realm.
So back to the THEMAC arbors, I guess the only surprise I have from your info is the difference in what you have as the Arbor Taper of 0.0391" per inch as opposed to my 0.0354" per inch. I didn't have the ability to put a factory arbor on the lathe to measure since I don't have one, but I really thought I did a good job of setting up to measure the bore of the spindle. Seems to me that on a very small taper like this that almost 0.004" is a large difference.
Thank you for the PDF drawings with dimensions. You have made it very easy to understand compared to my hand written diagrams and notes that I didn't really remove all the bad measurements before putting this on the back burner.
I was aware of the good practice of covering the lathe ways when doing anything in the grinding realm.
So back to the THEMAC arbors, I guess the only surprise I have from your info is the difference in what you have as the Arbor Taper of 0.0391" per inch as opposed to my 0.0354" per inch. I didn't have the ability to put a factory arbor on the lathe to measure since I don't have one, but I really thought I did a good job of setting up to measure the bore of the spindle. Seems to me that on a very small taper like this that almost 0.004" is a large difference.
Thank you for the PDF drawings with dimensions. You have made it very easy to understand compared to my hand written diagrams and notes that I didn't really remove all the bad measurements before putting this on the back burner.