Many thanks for your reply,
Can you help with the process you followed and what is the best tool to use considering I only want to go 30 to 40 thou deep.
I created a component from a circled and then applied a 10 degree dome to it,
I then created my toolpath and mapped the log to the surface.
Also, I need the reverse of what you have shown. Please see pic attached.
Len-Tikular (A glider pilots dream cloud)