Scrape it with a razor or brush it with a stiff wire brush. Be gentle with the brush because you don’t want to melt the wax. If you damage the surface of the felt you can renew it with sandpaper.
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Scrape it with a razor or brush it with a stiff wire brush. Be gentle with the brush because you don’t want to melt the wax. If you damage the surface of the felt you can renew it with sandpaper.