20lb 60/90 Silicon Carbide Grit for Rock Tumblers - Coarse Shaping

Our review of the 20lb bag of 60/90 silicon carbide grit finds it best suited for hobbyists and small shops that need a reliable coarse abrasive for the first stage of rock tumbling. The single biggest reason to buy is its consistent 60/90 grading that provides aggressive initial shaping and fast material removal, making it a practical choice for lake glass, sea glass, and rough stones. The review notes the grit is compatible with any brand of rock tumbler and emphasizes the appeal of buying from a Disabled and Veteran Owned company based in the USA.

Key Features

• Premium 60/90 grading: Provides a coarse, aggressive cut for efficient initial shaping of stones in stage one of tumbling.
• Universal compatibility: Works with any brand of rock tumbler so users do not need specialized media for their machine.
• Large 20lb quantity: Supplies multiple batches or extended projects without frequent repurchase, which is useful for regular tumblers.
• Rough texture for vibratory use: The coarse particles perform well in vibratory tumblers and on materials like lake glass and sea glass.
• Made by an American owned company: Manufactured and sold by a Disabled and Veteran Owned business located in Pecatonica, Illinois, providing a domestic sourcing option.

Who It's For

This grit is aimed at hobbyists, rock tumbling enthusiasts, and small craft shops that need a dependable first-stage abrasive for shaping and heavy material removal. It is especially useful for people working with rough stones, sea glass, or lake glass who want a coarse grit that breaks down predictably to prepare pieces for finer stages.

Those seeking a final polish or expecting immediate high shine after stage one should look elsewhere, since 60/90 is explicitly a coarse shaping grit meant to be followed by finer grits and polishing stages. Also, users who need very slow-wearing or ultra-high-consistency media for industrial processes may prefer specialized abrasives.

Pros & Cons

Pros

• Consistent coarse cut that speeds up initial shaping and reduces manual pre-work.
• Good value for the 20lb quantity, letting users run multiple batches without repurchasing quickly.
• Compatible with any brand of tumbler, simplifying use across machines.
• Domestic, Disabled and Veteran Owned business sourcing for buyers who prefer American-made suppliers.

Cons

• Because it is coarse, this grit will not produce shine; a full multi-stage process is required for polish.
• Some customers report the grit can break down sooner than expected under heavy use, affecting longevity.

Specifications

Product name	20lb 60/90 Silicon Carbide Grit
Grit grade	60/90 (coarse)
Intended stage	Stage 1 - initial shaping
Compatibility	Compatible with any brand of rock tumbler
Quantity	20 lb
Company	Disabled and Veteran Owned, Pecatonica, Illinois, USA

Our Verdict

The 20lb 60/90 silicon carbide grit is a sensible purchase for rock tumblers when aggressive initial shaping is required; it delivers predictable coarse cutting and good value for frequent users. Hobbyists and small shops that follow a multi-stage tumbling process will appreciate the compatibility and quantity, while those wanting immediate shine should plan to follow this with finer grits and polishing compounds.

Frequently Asked Questions

Is this grit suitable for vibratory tumblers?
Yes, the coarse 60/90 texture is effective in vibratory tumblers and works well on glass and rough stones.

Will this product produce a final polish?
No, this grit is for stage one shaping; achieve shine by progressing through finer grits and a dedicated polishing stage.

Where is this product made?
It is offered by a Disabled and Veteran Owned company located in Pecatonica, Illinois, USA.