All you will need is; - 220 grit wet and dry paper. This article has been viewed 87,494 times. All tip submissions are carefully reviewed before being published, This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. Before you start, use a pencil and ruler to mark where you want to make the cut. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. For a basic clean, wash down your slate with soapy water, avoid using abrasive cleaning products. The oils you asked about may just look like a grease stain. Do not use abrasive cleaners on your slate. As well as protective glasses against sparks and fragments.. We will be sawing slate angle grinder, our choice.Angle grinder with disc diameter 125 mm. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/1\/10\/Polish-Slate-Step-1-Version-2.jpg\/v4-460px-Polish-Slate-Step-1-Version-2.jpg","bigUrl":"\/images\/thumb\/1\/10\/Polish-Slate-Step-1-Version-2.jpg\/aid1633661-v4-728px-Polish-Slate-Step-1-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"

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