I have looked for this same info a while back. I found nothing. I made a post asking if a hot knife would work. It didn't turn up one response. So, I do plan on exploring a hot knife experiment or even a modified soldering iron. I just put this on the back burner for now and haven't gotten around to trying it. If you think my idea is decent and you do try it, please let me know how it works out. And if I try before you, I'll post back on this thread.