RE: Fletch tite Platinum
Platinum has given me good results on plastic vanes as long as I clean the shafts and am sure that I have good contact between vane & shaft. Sometimes when fletching with a helical clamp, I didn't get good contact in the middle. The ends were perfect, but the middle let go. I've since been pushing the vane base down on the shaft with a stick like Byron Ferguson does in the new Gateway video that he & Chance recently released.
Platinum will work on feathers, but it takes so long. You need to leave them in the clamp for at least 20 minutes. AAE Fastset Gel which is a super glue has given me the best results on feathers.
I don't have the dexterity to use superglue on plastic vanes. It works well but you only have one shot to get it right. A lot of people have used various super glues successfully, but I'm not one of them.