here is a step by step guide on how to inlay a strike plate.
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start by marking around your strike plate then use a chizel to carefully remove wood from inside the line.
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keep checking to see how the inlay fit's
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fill the hole with some 5 min epoxy
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then push the inlay into the hole.
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then wrap it with tape, you could also use some string.
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once dry remove tape/string and sand it with some 180 grit sandpaper until it is level with the wood. then rub it with some wire wool and add a polish.
SS