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2 part epoxy

A

amazilia

Full Member
Joined
Jun 28, 2013
Posts
69
Hi, I am having my first go at a really simple segment, just a piece of acrylic at an angle. I think on one of them I haven't mixed enough hardener in the resin, it is still tacky several hours later. Is there a trick or should I start again, I was thinking of warming it up maybe, so airing cupboard or microwave !
Regards Terry
 
Neil

Neil

Fellow
Joined
May 21, 2013
Posts
3,137
Location
Hitchin, Hertfordshire
First Name
Neil
Heating it up wont help. The only thing that might trigger a cure is exposure to strong UV light. If the reaction hasnt occured by now then, as you are segmenting, you should strip it apart and start again as the polymer chains will not have formed and the glue will not have bonded correctly to the surfaces and if that is designed to be flying around at a couple of thou rpm, - no thanks!
 
A

amazilia

Full Member
Joined
Jun 28, 2013
Posts
69
Thanks Neil, I read about polymer chains, heat and uv on wikipedia, but my 40year old chemistry O level (fail) wasn't really up to it. Its funny that I'm bothered over 20pence worth of wood and plastic, it's more about the knowledge ! Thanks for your help.
Regards Terry
 
Penpal

Penpal

Grand Master
Joined
May 26, 2013
Posts
25,342
Location
Canberra AUSTRALIA
First Name
Peter
Terry I always seek out epoxy glue from a busy outlet looking for fresh glues my problem with epoxy is to glue up before it sets partly so yes it is critical to mix it evenly, have success mate.

Kind regards Peter.
 
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