Stone Coat CountertopsEpoxy Thickener (0.5 lb) Thickening Agent for Vertical, Sloped, and 3D Epoxy Projects, Boosts Bond Strength for MDF, Plywood, and Seaming, Non-Hazardous and Made in the USA

Very effective...stirs in well with the epoxy, has no odor, and doesn't seem to affect the curing time, or noticeably add to the volume.

Although I did not use this as a covering, I did use it to glue 32 ga steel to a structure with both a positive and negative curve. Held in place with a sandbag, it seems to have worked quite well. Of course it’s always difficult to give initial quality on something when that quality will only become apparent after at least a year.

Works alright; my only real problem is that it changes the color of your epoxy. It's like mixing in white with whatever color you actually wanted.

Product is as described!

This stuff really thickens epoxy a lot. You can go overboard quickly, as I found out. It's so lightweight, it feels like you aren't adding much -- then bam, you suddenly have peanut butter. Which might be just what you need! Best to add a little at a time, mix well, and note how much you added to a set amount of epoxy in order to get your desired viscosity. Great filler, all around. Does make clear epoxy turn milky in higher concentrations.

In the description on this powder, it claims that it dries clear, however, I found that to be false... It dries white...

Mixes very well and thickens epoxy as desire so it can be applied vertically (and horizontally) without running.

I’ve not worked with an epoxy thickener before. It maybe more suited for colored epoxy