Resin manufacturers design their materials to be mixed in a particular manner.  The chemistry is designed to work by using specific ratios and thorough mixing of the materials.

Not following the instructions from the manufacturer will likely result in poor final results.

It is important to pay attention to detail, mix the materials correctly, limit contamination, and observe safety measures when working with liquid resins such as epoxy, polyester, vinylester, and polyurethane.

From Youtube Leggari Products

This video shows you what happens when the epoxy is not measured or mixed correctly. The only 2 ways this can happen is if it’s not measured out to the right ratio of Part A to Part B or its not mixed long enough for Part A and Part B to blend. We did a little of both in this video.