Hi David, you're up early! I think what I'd like to do is understand how to calculate the radius progression. I think I get the idea of how you make them from your recent post. I also have a brother in law that is a member of a machine shop co op here in Chandler AZ so I believe I have access to CNC, drill presses, lathes, etc... So, if I can understand how to calculate the radius and progression, I think I could "bond" with brother in law and fill in the gaps with the cauls I don't have and need. Thanks again for taking your time in helping me with this!

Lee Gendvilas

Hi David, thanks for sending the formulas! I'm still digesting the info. I've been sidetracked with a shower repair so I will get back with you when I am able to formulate coherent questions. Thank-you for taking your time to help me understand.

Lee Gendvilas

Hello again David! I believe I am on the right track in making replacement cauls. The question I have at this time is related to the pic. Do you cut the arc in #1 first then #2? Or do you cut both at the same time? I'm looking at the pic you posted earlier of the template and the ball drill bit and at first view it would seem that you're cutting both at the same time.

Thanks again for your time in responding!

Lee Gendvilas