[Andy Mauger]

just a mini (with a possibly varied answer) question:

Poly resin: Did a small pour just to test, 50ml (with 1ml catalyst) into a mould with a small piece or Jarrah Burr wood.

The PR didn’t stick at all to the wood..! Just wondering if you have any ideas why this would happen..?

Only things I can think of: Not mixed properly, or the wood wasn’t “dry..”

The PR seemed cured, but when it broke apart, the area touching the wood was still very tacky… I had left it alone for around 36 hours…

Cheers in advance.

[Andy Mauger]

I should have added that I am using Water Clear Casting Resin, and that I added a tiny bit of mica powder.

[Katherine Swift]

Polyester resin does not work well with wood. While it usually cures as expected, the shrink is too much and it pulls away from the wood.

[Andy Mauger]

Ahh, that makes perfect sense now 😉 Thanks.

Out of curiosity, would that still apply if the piece of wood was fully embedded in the resin?

Again, many thanks,

Andy.

[Katherine Swift]

Yes, it would. While the wood wouldn’t pull away from the resin, you would likely see an air line.

[Author]

Posts