Thread: Carbon fibre/epoxy gurus help please

Originally Posted by Tentman

It could be "blush" - some epoxies are prone to this . . . Basically not cleaning enought between coats

Amine blush would happen straight away no? This kit you used is all good, I used it heaps. UV stabilise will help with the yellowing but it will still go bad if it goes past TG. Carbon heat really fast in summer, on a long walk with the rifle on your back it could happen. West system 105 Tg is 60deg for example Nz fiberglass kit would be similar.

About UV, it could get to this point after long exposure but you would see it goes yellowish first