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I recently purchased a 2.5 Liter Ultrasonic Cleaner (http://www.harborfreight.com/25-liter-ultrasonic-cleaner-95563.html) from Harbor Freight Tools to clean RC parts.....boy am I glad I did....even the most dirtiest of parts will clean up in just a few cycles...what I do is place the parts in a gallon zip lock bag with the cleaner (keeps the Ultrasonic Cleaner clean), then put water in the Ultrasonic Cleaner, place the bag in the water and turn on ....usually only takes about four or five cycles to have sparkling clean pieces....another use I found is turning yellowed parts white, I place the parts in a gallon zip lock bag with hydrogen peroxide place in the Ultrasonic Cleaner with the heat on, the Ultrasonic Cleaner will get pretty hot...run a cycle or two every hour with the heat on and in a few hours white RC-10 parts.....

Some good information. I've been meaning for the longest time to buy an ultrasonic cleaner. I don't know how much I'd really use it though which is why I think I still haven't gotten one yet.

Speaking of Harbor Freight, everything they sold used to be extremely cheap but lately I've been noticing the prices on a number of their stuff is no longer cheap at all.

I dont know if you are aware but whatever you do seal the top down to the tank "the little gap on the inside "and never pour the solution from the tank out, always siphon it and wipe dry, this also keeps condensation out while the thing is running. Water gets into the transducer and will cause it to fail sooner or later. I used black RTV gasket maker and still siphon the solution out, mine is saved because I run gun parts thru it. R/C parts might find their way into it now though. Try to remember to use distilled water or at least boil it to remove the minerals, makes it work less hard to get things clean that you put in it without a bag, havent tried it with a bag never crossed my mind. Thanks for the idea.

I use a section of clear tubing and fill it with water from the tap plugging it with my thumbs, quickly uncap and dunk into tank - gravity will do the rest if you are fast enough, you do not need to pull it with your mouth.