I had some spare powder mixed with gloss varnish so I poured it into some molds and left it to dry. The test being, will it adhere to my piece after I've poured. At the time I was just going to try it with UV resin as I did it a few weeks ago, however seeing as I have since started trying eco pour, I've tested that too. Mixed results. On one it adhered to the eco pour, on the other it only partially adhered. Here's pics of those. I have another mold to test with UV resin and epoxy, I will get around to trying that this weekend. Pic 1 it seems the green went partially up the side of the mold and that peels, pic 2, the red only touched the bottom and appears fully adhered. If it works most of time, its a way to not waste the powders, especially your more expensive ones, or gloss varnish which is quite expensive imo, if you dont have another project on the go at the time to paint on straight away