Why Ultrasonic cleaners when Wash & Cure units seem to be so easy to use? Ultrasonic vibrations loosen out debris from any surface surface efficiently & quickly using harmless forces. The frequency of motion they form safely dislodges uncured resin particles at a microscopic level that other devices cant create. Ultrasonic cleaners can clean most resin parts in 3 mins. Most entry level washers can't beat that. The fact that there is no heavy movement, allows debris to settle rather than float around. This makes it far easier to get the parts clean with less fluid use. Resin cleaning liquids like Monocure Resin away & Phrozen now make it a cheaper & safer option than to use IPA or other explosive alcohol based cleaners. When cleaning castable resins or industrial resins in particular, ultrasonic cleaners will give you the edge.