Sonic Cleaners

[Kingstepper]

I also never found the Lidl, Aldi ones particularly effective though usually supplied with plastic baskets so nothing rubs.

Never found emptying a problem with these either TBH (just upend over a bucket, down the sink or whatever). Maybe trickier with a heavy 'industrial' machine.

[walkerwek1958]

Ultrasonic cleaners aren’t good at breaking up thick layers of soft dirt, this is better removed using a soft toothbrush and detergent. Ultrasonic cleaning is good at removing thin layers of dirt, particularly in inaccessible areas. Put the item to be cleaned in a glass jar containing a strong soln of washing up liquid, put the jar into water in the bath, leave it cleaning for 4-5 minutes. Drain the detergent and rinse with clean water , giving another good blast of ultrasonics.