Regarding reusing the tips - if you have a compressed air source you don't even need to remove the mixer. I use a rubber-tipped air gun to blow out any glue (stick the end in a waded up paper towel), stick the end of the air gun in the other end (make sure it fits tight) and blow away for a couple seconds. Then just stick the tip in some acetone for next time.

Thanks to John Redman for telling me about storing them in acetone - now I use Aeropoxy/Hysol for even small jobs.

I have found that aluminum or glass cigar tubes are PERFECT for storing the tips in the acetone bath. I particularly enjoyed the process of finding just the right size tube.

FWIW, I hate running out of things while working on a project so bought about 10 tips when I ordered my starter kit from Art's. 3 months and four tubes of Hysol later, I am still using the first tip....

barry