Testing Superglue -polymer brooch backs
A fellow polymer clay artist was asking about glue for brooch backs the other day and it got me thinking. What happens to the superglue I use when the piece goes in the oven? My normal procedure for adding a brooch back is to superglue it in place then cover it in a decorative layer of polymer clay and cure the piece again. Here’s a sample back
I use the super glue to hold it in place whilst I am working and I know the polymer clay covering the brooch bar will secure it but does the superglue survive the curing process? I had to do a quick test to find out. I tried 2 brands of superglue. The first, on the lilac chip, was Loctite universal super glue. The second, on the orange chip, was Kato PolyGlue Black Flex CA (CA being Cyanoacrylate the chemical name for ‘superglue’). I glued brooch backs in place and then cured them as I would a normal brooch made from Kato Polyclay at 150 oC for 30 minutes.
When I took them out of the oven I was surprised to see there was no change at all in the appearance of the glues
Just to be sure there was no ‘damage’ to the glue I tried to push the brooch backs off. With quite some effort, more force than you would expect a brooch back to suffer in normal careful use, the Kato polyglued back came off. I did eventually manage to get the loctite one off too but it was much harder.
The verdict – superglues are fine even being heated to 150 oC
It is always a good idea to test out new adhesives to be sure they are going to be suitable for your purpose. I like to always test a prototype of new jewellery to make sure it will be strong and durable and the materials I’ve used are fit for the job.
I’m having a break for a couple of weeks both at home and away with my family but I look forward to sharing some new polymer clay workshop dates and new jewellery soon.
Have a good summer