My goal is to cut a reamer to the taper of a tie rod end for a Dodge Ram. This is 1.5" per foot. I have an old tapered reamer that is a different angle that I am grinding on my Monoset tool grinder.

I calculate the taper angle to be 7.12 degrees, from the arc-tangent of 1.5/12. This comes to 3.06 degrees, as I am cutting one side of the round reamer, right?

As I need this to be very accurate, I am using an indicator over a measured 1" of travel by the spindle head to measure half of .125 (1.5/12), .0625, since I am cutting one side of a round reamer. The tool head has the angle set to the calculated angle.

Am I setting this up correctly or did I miss something in my calculations?

Thanks,

Chris