Turning Matching External/Internal Tapers

[olderdan]

Olderdan,

Joe Pie is one of the all-time master teachers. I love his use of applied mathematics in the shop. Very powerful.

I understand his angle setting method but I didn't catch how he sets the starting diameter.

Rick

Hi Rick, not sure what you mean by a start dia, all Joe Pie is doing is measuring three sides of a triangle so angle must be correct. I know you get that. A start dia on the work can then be anything you want. If it has to be a size I usually turn a short parallel reference dia and run up the taper from there.