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<p>[QUOTE=&quot;desertgem, post: 1605333, member: 15199&quot;]You can make a 2x2 box or slab box that functions like the Intercept product by cutting a piece of thin copper sheeting that will cover the top and about 1 in. down the sides ( will have a tab shape at each end). Abrade the inside of the sheet until it is bright and shines, then fold and push/glue into the inside of the part that forms the lid. Now the copper will react with corrosive gases and you can see when it needs replacement ( unlike the original), or renewing by re-abrading the copper and put it back again.[/QUOTE]</p><p><br /></p>

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