I will need to cut my bio hair at some point in the next two months. I know that's a way away, but I want to visualise how to do it long before I actually do it. And before anyone asks, the undercut is a no-no for me.
I think I'll remove the unit first. I will send some before/after pictures. If it goes well it can serve as an educational tool. If it goes badly then I guess a few laughs in these times are no bad thing!
I had the same problem. I used a wahl buzzer and I have guides up to number 12. I did a pretty good job. You really cant go wrong with the clippers, because you cant cut hair a different length because the guard wont let you. I just might keep doing it this way.
I have a client who go anxious and shaved his entire head... sent a pic, with the hair system attached... I will say it looks awesome! He grew about 3-4 days of stubble (head and face), the look on him is very very cool!