I've never had a big problem w/ bubbles for my rods; but, I do a lot of different epoxy applications and like the mixer.
For those interested it would appear the the plastic cups are sold separately and according to PacBay are a standard 2.5 oz. Translucent Plastic Souffle Cups.
Googling 2.5 oz plastic souffle cups shows lots of suppliers in various qty's...
I once knew a drug addict... He told me I have a fishing problem!