@2b562a3e @5756e48c Which ones have you tried? I've only really used the Polymaker silks, and while they did need a temperature bump, I never had issues to that level with layer adhesion. 

 @20ffb98d @5756e48c Recently YOUSU. Here is a clean layer separation made with no leverage needed (broke on first try with thumbs touching each other).

https://media.hachyderm.io/media_attachments/files/111/034/929/040/781/025/original/fdfbef0adb08bbac.jpeg 

 @2b562a3e @5756e48c Yeah... I can't say I've ever seen anything like this with Polymaker silks.