Never tried the peanut butter. Maybe it's the peanut oil?
Dissolving gum can take time and leave you with a lot of liquid waste. Plus, you have to keep buying solvent.
Depending on the composition of the gum and the shape of the boiler, cooling it might help. Cooling hardens the gum. If it...
Interesting question. We would need more analysis on the grains and the steps in your process to know whether they are from the CMP. You may not be able to give that much information here, and I'm not an expert. So I'll give you a couple of ideas.
First find out when the particles started...
