The only way I'd bother with that would be to take it to my local supply house and use his wire stripper.
He has one, most do not though.
A power stripper can be had for a few thousand dollars. It would be worth it if it would get enough use. I can't tell you how much #14, #12 & #10 I throw away. The time and effort involved is not even worth it to me to deal with scrapping it with the insulation on.