Quote Originally Posted by k2kyo View Post
Heat is the issue.. as the plastics cool they contract, which makes them peel up. You just need something with stronger adhesion. PET tape + gluestick has been a popular choice, but it's hit/miss for some people.

Another option is a product called wolfbite nano from airwolf 3d.. it's relatively expensive compared to home brew solutions, but it does work extremely well for PLA.. a little will last you quite a while.
Thank you will give that a try, we are struggling to maintain ambient above 17degC I suspect this might be a cause.