Hey guys,
Quick question. I used another brand's Epoxy primer, (yeah I know)...I just ordered SPI EPOXY, in process of switching over to all SPI products. SPI arrives tomorrow.
Anyway this brand Epoxy is a 4:1 mix. In order to get it to shoot smooth, I added 30% slow reducer. It shot beautifully. I am shooting raw polyurethane plastic. The epoxy bonded 100% to the polyurethane. Even areas that were not prepped, it bonded. I did a "adhesion test", by cutting a grid with a razor blade. No issues whatsoever with epoxy bonding directly to the polyurethane without use of adhesion promoter.
I sprayed (2) wet coats, it laid out perfectly smooth and there was few nibs here. I epoxy primed the parts at night 10:00 pm. The next afternoon I wetsanded with 1500 and sprayed the base/clear.
I gave the basecoat/clearcoat 24 hours and wanted to do an adhesion test to make sure that bonded to the epoxy. Well it seems it didn't. I can easily strip the base/clear off the epoxy where I cut the grid pattern.
Is 24 hours enough time for it to fully "bond and cure" to the epoxy?
Attached is few photos.
Quick question. I used another brand's Epoxy primer, (yeah I know)...I just ordered SPI EPOXY, in process of switching over to all SPI products. SPI arrives tomorrow.
Anyway this brand Epoxy is a 4:1 mix. In order to get it to shoot smooth, I added 30% slow reducer. It shot beautifully. I am shooting raw polyurethane plastic. The epoxy bonded 100% to the polyurethane. Even areas that were not prepped, it bonded. I did a "adhesion test", by cutting a grid with a razor blade. No issues whatsoever with epoxy bonding directly to the polyurethane without use of adhesion promoter.
I sprayed (2) wet coats, it laid out perfectly smooth and there was few nibs here. I epoxy primed the parts at night 10:00 pm. The next afternoon I wetsanded with 1500 and sprayed the base/clear.
I gave the basecoat/clearcoat 24 hours and wanted to do an adhesion test to make sure that bonded to the epoxy. Well it seems it didn't. I can easily strip the base/clear off the epoxy where I cut the grid pattern.
Is 24 hours enough time for it to fully "bond and cure" to the epoxy?
Attached is few photos.
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