ive just ordered a 10 litre ultrasonic cleaner, mainly for carbs looms small engine parts etc. having used someone elses, im staggered tha ive survived this long without one. although ive seen a plastic dustbin with a couple of orbital sanders strapped to its sides, and that was pretty spectacular in its results too!! ive a paraffin bath in the shed, its ok, but not quite powerful enough for my needs.