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epoxy resin preventing from sticking.

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speelwerk14/08/2020 21:45:55
372 forum posts
5 photos

Would a silicone spray prevent a metal (silver) hinge from sticking to a casting epoxy resin, or should I use something else? Niko.

Brian Sweeting14/08/2020 22:03:05
437 forum posts
1 photos

There are a few things available..

Read here...

Non stick epoxy

Jeff Dayman14/08/2020 23:58:48
1853 forum posts
45 photos

Silicone may interfere wit the curing of the epoxy. Paraffin wax (solid at room temperature) as used for candles and home canning can be used as a "mould release" coating, and will not interfere with the epoxy cure, or bleed out of the hinge later!

If you melt some wax in a tin over a pan of hot water and dip / air cool the hinge twice you will get a thin but complete coating. Good luck with it!

Old School15/08/2020 06:23:54
351 forum posts
30 photos

PVA mould release just paint on a couple of coats.

Joseph Noci 115/08/2020 07:27:11
738 forum posts
940 photos
Posted by Old School on 15/08/2020 06:23:54:

PVA mould release just paint on a couple of coats.

Second that - works a treat - just comes in inconveniently large quantities ( 25liters) in my part of the world!

Any carnauba based wax works very well - used as epoxy lamination release on molds the world over..wipe it on, let it almost dry and buff it a bit - do a second coat and thats it.

If you can get hold of Meguiars Mirror Glaze wax - that would be perfect.

Joe

Brian Oldford15/08/2020 08:10:44
avatar
684 forum posts
18 photos

*1 for Meguiars Mirror Glaze 8 mould release. Great stuff!

Clive Brown 115/08/2020 08:46:32
481 forum posts
18 photos

Where suitable,I've used brown parcel tape, the very thin stuff, as "non-stick" for resins. Works well, one big advantage being that there's usually a roll of it conveniently available in the house.

speelwerk15/08/2020 10:01:45
372 forum posts
5 photos

Thanks all! Lots of possibilities, I like the paraffin one. Niko.

Edited By speelwerk on 15/08/2020 10:02:26

Jager15/08/2020 13:37:46
17 forum posts

I use DEVCON for bedding rifle actions into stocks. In order to ensure that I can get the two items apart after curing I first wipe the barreled action down with alcohol then brush all over with boot polish, leave 5 mins to harden, polish off and repeat. Never had a problem seperating two very expensive items.

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