Originally Posted by
HI-TEK
Great diagnosis.
I think that you have found the cause. Using more, of a more diluted coating will work better, if you continue to use such large coating container with small batches, as liquid mixture will stay liquid longer and evaporate slower with the extra solvent used in the diluted brew...
The larger surface area in your large coating container would take up coating on surfaces and use up coating, plus solvent would dry quickly.
Don't forget, any coating that remains on walls of coating container can be recycled, by simply using straight Acetone, and swirling fresh cast. Coating will re-dissolve off the walls and coat onto the cast.
As you said, using a much smaller container, adequate to coat the amount you want to do should do the trick.