Maybe this has been posted before, but I was unaware of this.

I have been assembling my quadcopter and as advised have used red loctite # 271 to lock the metal nuts and the prop mounts.

I have used it all up and bought some blue loctite #243 and have used it on some of the nylon nuts last night and have just noticed today that it has eaten away the part of the nylon bolt inside the nut and the nylon nuts are soft and easily split in two with my thumb nail.

I must hold my hands up and admit that I didn't realise that threadlock could do this to plastic, but thought I would bring it to everybodys attention.

Martinp