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Made from cardboard paper, wheat glue and filled with coffee ground
The coffee ground shrinks a lot when drying. I'd use cardboard layers instead if I had to do it again
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this post was submitted on 28 Aug 2026
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Are there instructions about how the ground coffee is used? Your other link seems to only be about waterproofing.
I just mixed it with glue to make a grainy paste. Then I used it to fill around the the razor and brush. Finally I covered it with paper and dry for a week. Occasionally I would leave the razor and brush inside to prevent it from shrinking