Yeah the old hot water and bucket trick works,,but make sure not to contaminate the epoxy with water drops when pouring/mixing
Scrub it kook
My thought on the hot water would be leaving the container of resin in hot water for a time, then drying it to remove any water droplets before pouring.
The comment about post cure temps is interesting. I hadn't considered that and couldn't do much for this microwave batch that I applied, but will consider next time. I haven't sanded what I applied yet and might not get to until the spring. But it was solid.
To wrap up for anyone searching how to improve a finicky batch of epoxy resin (especially Ding All brand part a and b), microwaving the resin first definitely made a difference. I went from a tacky mixture every single time with Ding All's 8 oz containers, to normal hard cure I was used to using other kits.
After reading comments and based on my experience, I would recommend microwaving Part A only for 3-8 seconds depending on how much you use. Plastic container you poured it into should feel a bit warm after but don't overdo it. Then mix with part B (half part A amount for Ding All) and be prepared for a relatively quick kick in time. I'm assuming the part A I was using needed the heat because it wasn't properly mixed or had some other flaw that heat took care of. Hard to mix part A well in their 8 oz containers.
thanks for all the advice and comments