Hi, most of the plastic mixing cups I use do not clean very well after use, especially with epoxy.
If I leave the resin inside, it becomes brittle and never detaches completely. If I clean it with acetone, over time the plastic becomes dull getting the problem worse.
So do you use any strategy not to waste too many mixing cups?
I was thinking about using a realease agent but I am worried about contaminating the resin.
Also I try to look for silicone mixing cups but found nothing in the usual stores.
Ideas?