HIGH QUALITY - 5 pounds of 60/90 Graded Silicon Carbide Grit The first rock tumbling grit stage provides initial shaping (Step 1) The rock tumbling grit is packaged in a re-closable seal bags to ...

If you’re reading Hackaday, there’s a good chance you had a rock tumbler in your younger days. Hell, we’d put odds on a few of you having one rumbling away in the background as you read this.

If you’re reading Hackaday, there’s a good chance you had a rock tumbler in your younger days. Hell, we’d put odds on a few of you having one rumbling away in the background as you read this.

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This is especially true during summer, which is why you need a tumbler you can trust. The best tumblers are insulated, will keep your drinks cold (or hot) for hours, and are super durable.

Read on for our review of the best Stanley lookalikes. Why buy a lookalike when you could have the real thing? The TikTok viral and acclaimed Stanley Tumbler is one of the best-known water bottles ...