Hi Does anyone have any experience of bonding Topas COC (8007x10)? I haven't had any luck with pure thermal bonding in a heated press and oxygen plasma treatment didn't help either. I also tried a solvent assisted method (hexadecane + IPA) which stuck a little bit but not much. N.B. I have to use 8007 so I can't use a lower Tg grade as an intermediate layer and I have some quite shallow channels in my structure which makes it harder. If anyone has any good recipes, process tips or references that would be great. Gareth