I think he would have found cutting with a rotary cutter easier and more efficient.

A couple years ago there was a discussion thread here about the structural integrity of ‘off brand’ CF frames. Someone posted a video of a guy who dissected several repeatable name new CF frames and found some concerning structural flaws inside. And, he also found that some of the cheap, off-brand frames were in better condition than the expensive well-known frames. I don’t think it was same guy since he used new frames, and this guy was using old used frames.

Dan