Having clarified that I am the "Ed" in question, here's my take on the answer.
Our (Dawn and I) approach to polyresin has been based on ease of turning, not ease of making the blanks. All of Dawn's "Pen Potion #9" blanks are slightly "softer" than many commercial blanks. So, they are less prone to "chipping" off and, therefore, cracking.
I have advised Larry to use a roughing gouge to get to "round" (he is comfortable with this tool - that determines what tool to use). The measure of success is the "structure" of the pieces coming off the blank. IF you are making nice ribbons, all is well. IF you start creating tiny pellets -- rethink your approach. (For those who have turned a lot of plastic and are now saying, "THAT isn't right - I throw LOTS of pellets and still end up with a good pen, ----- So do I, NOW!!! But when learning, AVOID this.)
The entire pen CAN be turned with a roughing gouge, however, I SUGGEST using a smaller tool to refine the ends when the pen is neating completion. OR the 120 grit gouge, if you are CHICKEN (and smart, sometimes).
ANY questions, e-mail or call me ---- Always happy to help.
Thanks for using OUR blanks!!!
Post the GREAT pen you will create!!!