I've never felted with different yarns, because I'm afraid that they wouldn't felt the same. So I would be hesitant to do it, especially with some of them being commercial and some not being commercial. However, I know that if you felt it in a sink or something with hot water and your hands agitating it, instead of the washing machine, you have greater control of how much felting occurs. It's possible that you could try that, and agitate the less felted portions more... However, that's just a suggestion and I can't speak from personal experience :shrug: Good luck!