Glue to bond plastic sunglasses frame

[gizmo1990]

This seems to be a bit of a holy grail! I thought I’d found a glue which would perform this function in Loctite’s All Plastics glue. However it failed after several attempts.

What is it with spectacle plastics? Do they purposely male then out of some non stick plastic??

Can anyone recommend a glue that will absolutely POSITIVELY glues a pair of sunglasses plastic?

Any advice much appreciated.

 

[Burnerman]

I think you’ll have a problem with this one.....spec frames are typically made from polyamide, part of the nylon family.
Due to the high oil content they are easy to mould but almost impossible to stick but a professional optician could have a go at hot welding them. This process uses very hot air to melt the plastic whilst a filler rod is added. I’d doubt if it would be worth your while though.
John

 

[EddieM]

Forget it, they're toast, many in fact most plastics never glue together with much strength.

 

[mattylad]

lollipop stick and some plasters.

 

[Mr Chibs]

Did anyone find any glue for this procedure?

I tried a two part epoxy, (Lidl) which worked fine for a month, but finally came unstuck.

I’m trying to bond the metal hinge to the arm

 

[gizmo1990]

I haven't unfortunately. As has been advised, the plastics used for frames does seem to include oils which completely rule out bonding. That just seems to be the way it is, annoyingly. The best bet seems to be... don't break the frames!