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Architect and designer Ben Uyeda demonstrated carving smooth river rocks into bowls for a restaurant project, using an angle grinder and diamond tile blade. The technique can create decorative stoneware, but the source report says rock samples should be lab-tested and the finished surface treated with a food-safe sealant before any food use; whether a particular bowl is safe depends on its material and testing.
Architect and designer Ben Uyeda demonstrated carving smooth river rocks into bowls in a TikTok video, using an angle grinder fitted with a diamond tile-cutting blade. The project, which he said was for a restaurant at a hotel he is building, shows a relatively direct way to make decorative stone vessels, but the report cautions against serving food in a finished bowl without testing the rock and using a food-safe sealant.
Uyeda’s process starts by placing the stone in a sandbox that holds it in place while he works. He recommends flattening the base so the bowl can sit steadily. For a smaller bowl, he cuts a radial pattern into the stone, then uses a hammer and chisel to remove material and create a rough depression. He grinds the hollow smooth afterward.
For a larger, oblong bowl, the report describes cutting a grid into the stone to outline a broader depression. Uyeda also mentioned a diamond ball grinder with an extension shaft as another possible carving tool. The source does not provide a full tool list, a measured time or cost for making a bowl, or instructions for choosing and handling a particular stone.
Food use brings a separate set of concerns. The Hunker report says Uyeda discussed sending rock samples for laboratory testing and applying a food-safe finish. It warns that porous river rock can be difficult to sanitize and that stone composition and possible contamination vary. The report presents testing and sealing as precautions, not as proof that any homemade bowl is safe for food.
The Food-Safety Question
The project matters to readers because its visual appeal can make a rough stone seem ready to use as tableware, while appearance alone cannot establish food safety. A porous surface may be hard to clean, and the source report says both the stone’s composition and potential pollutants should be considered before food contact.
Testing and suitable sealant can also affect whether the DIY is economical. The Hunker report gives an example of a pint of MORE Stone Sealer listed at $55.63 at Walmart, illustrating that a food-safe finish may cost more than a simple decorative project would suggest. That is one cited price, not a general estimate for the full project or a guarantee of a product’s suitability for every rock.
Using a carved bowl for keys or other non-food items avoids the specific concern of serving food from an unverified surface. The source also describes broader stone-carving uses, including sinks, plates, mugs and decorative objects, but it does not establish that the same process is appropriate for every use.
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From Restaurant Project to DIY
The original Hunker report centers on Uyeda’s TikTok video, titled “I [am] carving rocks into bowls using my @RYOBI Tools USA angle grinder.” The video shows him shaping stones for a restaurant at a hotel project. The report notes that stone bowls sold at retail can vary widely in price, but its quoted range—from $8.99 to $2,800—is not a market survey and does not compare equivalent sizes or craftsmanship.
The process is part of a wider set of stone-carving projects. The Hunker report cites artisan Vladislav Savchenko as making objects such as bathtubs, sinks, plates, mugs, vases and candle holders using variations on stoneworking methods. Those examples provide context for the material’s decorative potential; they are not instructions or safety certifications for Uyeda’s particular approach.
““I [am] carving rocks into bowls using my @RYOBI Tools USA angle grinder.””
— Ben Uyeda, in the TikTok video described by Hunker
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Testing and Use Still Matter
The supplied report does not identify the rocks Uyeda used, publish laboratory results, name the specific sealant applied to his bowls, or say whether the finished pieces passed food-safety testing. It also does not specify a testing protocol or establish that a sealed surface will make every type of river rock suitable for serving food.
The exact cost and difficulty of the project remain uncertain because the report gives no complete materials list, time estimate or breakdown of equipment costs. Its retail-price examples are broad and do not show how a handmade bowl compares with a particular commercial product. Readers should treat the demonstration as a carving idea, not as a certification of food-safe tableware.
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Before Putting Food Inside
Anyone considering the project for tableware would need to identify and test the stone, then select a finish specifically suitable for food contact and follow its manufacturer’s directions. The source material does not name a laboratory, testing standard or sealant recommendation, so those details cannot be confirmed from the report.
Without that information, a carved river-rock bowl can be treated as a decorative object or a holder for non-food items. Uyeda’s video demonstrates the shaping technique; food use depends on separate material testing and finishing, and the supplied report does not confirm that the bowls shown are cleared for serving.
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Key Questions
What tools does the demonstrated method use?
Uyeda uses an angle grinder with a diamond tile-cutting blade, a hammer and chisel, and a sandbox to hold the stone. He also mentions a diamond ball grinder with an extension shaft as an alternative for smoothing the hollow.
Can a river-rock bowl be used for food?
The report does not say that every river-rock bowl is safe for food. It describes laboratory testing and a food-safe finish as precautions and warns that porous stone can be difficult to sanitize.
How does the carving process work?
The described method begins by stabilizing the rock and flattening its base. The maker cuts a radial pattern for a smaller bowl, removes material with a hammer and chisel, then grinds the hollow smooth. A grid cut can outline a larger depression.
What could the bowl hold if it is not tested for food?
The Hunker report suggests using an unverified bowl for non-food items such as keys. It also notes decorative possibilities, but does not provide safety assessments for specific uses.
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