Walnut shell should be easy to get from reloading shops in small buckets, like 1 gallon or so. You can also get vibrating tumblers pretty inexpensive too, but those are likely at Harbour Freight in your area.
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Walnut shell should be easy to get from reloading shops in small buckets, like 1 gallon or so. You can also get vibrating tumblers pretty inexpensive too, but those are likely at Harbour Freight in your area.