Sid,
Thats funny that - I've recently been having a few problems with green - I'm getting good deep reds though. I know in my case that the green has probably been contaminated with tap water so I reckon this may be my problem. I'm going to mix up some more green and see how that goes.....
The trouble I've found with removing polishing compound by wiping/brushing is the aluminium surface gets scratched by the very compound you're trying to remove. I would be really interested to know if anyone has a good way of handling and cleaning to preserve a nice polished finish. Do you anodise small parts ? - if so you can get a small ultrasonic cleaner quite cheap. I've just got one and the polishing compound comes off fantastically using one of caswells de-greasers as the solution. Unfortunately for me (and probably you also) it's not big enough so I am still regularly spoiling hundreds of pounds worth of goods. I'm just waiting for an affordable decent sized ultrasonic cleaner to turn up.
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