you can re-use an acid brush by cleaning it with acetone in a small pill cup.. then paint off the remaining acetone on a paper towel and place in a baggie to keep it relatively dust free... warming epoxy in a warm water bath or near an in-efficient furnace prior to mixing equal parts makes it thinner as well... I prefer devco 2T but it gets pricey... would be nice if the larger sizes (50ml) were available to layman...
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