Yes, it's a pain in the arse to cut and is quite brittle in relation to the other widely-used bot plastics. An impact from a spinner could cause bulkheads/uprights to crack/shatter.

About 25 seconds in:


Carcinus had already been beaten up by Boner so it was a bit decrepit but you can see bits of polypro breaking off and flying across the arena from the NST impact. Not ideal really. I'd advise Nylon 6 if you want something sturdier but it's not so great if you're on a budget. But yeah, avoid polypro if you can :P