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Message: <blockquote data-quote="archive10" data-source="post: 963946">110 bar is fine.Some of my CM dishes was looking like yours.I cleaned them first using dish-washing liquid and multi-purpose cleaning sponges (NOT the abrasive side!).Not entirely satisfied with the result, I got out the pressure washer (110 bars max), and gave some of them another go.Took quite some effort, it's necessary to hold the nozzle real close to the surface especially at the back.There's even more effective means, involving shampoo and a bathub - [USER=312276]@RimaNTSS[/USER] is the expert here... <img src="https://www.satellites.co.uk/styles/default/xenforo/smilies/smile.png"  class="smilie" loading="lazy" alt=":)" title="Smile    :)" data-shortname=":)" /></blockquote>