Grit blast then ultrasonic. If you gb then just wash and then us you'll be amazed how much gb powder the us pulls out that the wash didn't.
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us liquid, 5% Tesco all purpose cleaner used at max temp recommended for us. The us 'vibrators' are usually just stuck to the bath wall, too hot and you risk melting the glue on some types.
From: O14@... [mailto:O14@...] Sent: Wednesday, 12 August, 2015 15:57 To: O14@... Subject: Re: [O14] Ulrasonic cleaning and pumice blasting
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Back to the ultrasonics again. My new 6litre tank and cheap air eraser have arrived this week. Please remind me. I have had conflicting advice as to whether one should blast and then ultrasonic clean or the other way round. So little help is needed there. In addition Roy mentioned using a good watch and clock cleaning fluid but the instructions to the ultrasonic cleaning bath suggests water or water with a little washing up liquid. If the watch and clock fluid is recommended has anyone any preferences as to brand and where one obtains stuff? I do hope I do not have to purchase 6 L of fluid! My little Mark Clark Wren is now ready for painting. A super little kit once I had ironed out a few silly errors that I had made myself. And yes the smoke unit did fit in the smoke box, the decoder in the tank and the speaker in the boiler! Paul