Features
- Vacuum-brazed diamond grit for the cutting edge
- Segmented tooth design to reduce debris buildup and heat
- Removes material plugs for faster clearing
- Quick Change-compatible universal hole saw system (for rapid size changes)
- Designed for wet sawing of hard materials
Specifications
| Diameter | 1 in |
| Cutting Depth | 1.5 in |
| Length | 2.9375 in |
| Teeth | Diamond grit (vacuum-brazed) |
| Tooth Configuration | Segmented |
| Weight | 0.21 lb |
| Pack Quantity | 1 |
| Part Number | HDG1 |
| Upc | 000346392036 |
| Recommended Materials | Porcelain (including PEI 5), granite, ceramic tile |
| Intended Use | For use with machines designed for wet sawing; use on a GFCI-protected circuit |
| Safety | California Proposition 65 warning applies (may contain chemicals known to cause cancer or reproductive harm) |
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Diamond-grit hole saw designed for cutting hard surfaces. The abrasive is vacuum-brazed to the cutting edge and the blade has segmented teeth to limit debris buildup and heat. Intended for wet-saw operation and suitable for materials such as porcelain and granite. Follow electrical and wet-cutting safety requirements (use a GFCI-protected circuit).
Bosch 1 In. Diamond Hole Saw Review
Cutting through hard materials like granite and ceramic tile can be a daunting task without the right tool. In my quest to find a reliable hole saw for these challenging materials, I decided to try out the Bosch Diamond Hole Saw, model HDG1. Bosch has a solid reputation for quality, and this tool promised to live up to that standard with its vacuum-brazed diamond grit and segmented teeth design.
The first thing that struck me about the Bosch hole saw was the build quality. It felt solid and well-constructed in my hands, which was reassuring given the demanding materials I intended to cut. The vacuum-brazed diamond grit is a standout feature, designed to provide faster cutting and enhanced durability. This feature is particularly beneficial when working with materials like granite and high-grade porcelain tiles, which can quickly wear down lesser tools.
One of the most significant challenges when drilling into hard surfaces is managing debris and heat. The Bosch hole saw's segmented teeth design is a clever solution to this problem. It effectively reduces debris build-up and helps dissipate heat, ensuring smoother and more efficient cuts. This design also extends the life of the tool, as excessive heat is often a primary cause of wear and tear.
When it came time to put the Bosch hole saw to the test, I started with a thick ceramic tile. I used a drill press for added stability and precision. The hole saw performed exceptionally well, cutting through the tile with ease. The holes were clean and sharp, a testament to the quality of the diamond grit and the overall design of the tool. I made sure to keep the bits wet and cool during use, which is crucial for maintaining their longevity. After several holes, there was no noticeable wear on the bits, which was impressive.
I also had the opportunity to use the Bosch hole saw on PEI 5 porcelain tile, one of the toughest materials you'll encounter in tile work. This tile is nearly as hard as granite, so I was eager to see how the tool would handle it. I used plumber's putty to create a dam for constant submersion and clamped the tile to a scrap piece of plywood for stability. Again, the Bosch hole saw did not disappoint. It cut through the porcelain with relative ease, and the holes were precise and clean.
One of the standout features of this tool is its maximum cutting depth of one inch. This depth is more than sufficient for most tile and granite applications, making the Bosch hole saw a versatile addition to any tool kit. Whether you're installing new tiles in a kitchen or bathroom or working on a more complex project, this tool is up to the task.
The Bosch diamond hole saw is also user-friendly. The hole saws snap into the included spring-loaded special arbor, making it easy to switch between different sizes. This feature is particularly handy when working on projects that require multiple hole sizes. The tool's design ensures that even those who are not professional contractors can achieve professional results.
In terms of pricing, the Bosch hole saw is on the higher end, but it's a classic case of getting what you pay for. The durability and performance of this tool make it worth the investment. I found that the price difference between various retailers could be substantial, so it's worth shopping around to find the best deal.
One minor issue I encountered was with the 1" hole saw, which seemed to have a tooth missing. However, this did not significantly impact the tool's performance, and Bosch's customer service was prompt in addressing the issue.
In conclusion, the Bosch Diamond Hole Saw, model HDG1, is a top-tier tool for cutting through hard materials like granite and ceramic tile. Its vacuum-brazed diamond grit and segmented teeth design ensure efficient cutting and durability, while its user-friendly features make it accessible to both professionals and DIY enthusiasts. The tool's higher price point is justified by its performance and longevity, making it a worthwhile investment for anyone serious about tile and stone work.
I highly recommend the Bosch Diamond Hole Saw for its exceptional build quality, performance, and user-friendliness. Whether you're a professional contractor or a DIY enthusiast, this tool will make your tile and stone cutting tasks significantly easier and more efficient.
Project Ideas
Business
Mobile Tile/Stone Hole-Drilling Service
Offer on-site drilling of 1 in pass-throughs in porcelain and granite for shower arms, bidet sprayers, body jets, or cable/pipe penetrations. Carry a water-feed bottle, GFCI protection, and drill guides; charge per hole plus travel, and market to tile installers, plumbers, and remodelers.
Plant Shop Drainage Pop-Up
Partner with nurseries to add 1 in drainage holes to customer-selected ceramic pots while they shop. Price per hole, upsell mesh screens and cork feet, and set up a safe wet-cut station with splash control and GFCI—turning a common pain point into a revenue stream.
Etsy ‘Stone Dot’ Accessories
Produce magnets, key fobs, earrings, and mosaic kits from the polished 1 in core plugs in granite/porcelain. Low material cost and distinctive natural patterns create a premium look; bundle as color-coordinated sets and offer custom engraving or gold-leaf inlays.
Countertop Accessory Retrofits
Specialize in drilling 1 in holes in granite/porcelain countertops for soap dispensers, RO taps, and cable grommets without removing tops. Use water dams and protective film to control slurry, provide fast scheduling for kitchens and cafes, and price as a flat service call.
Weekend Rental Hole-Drilling Kit
Rent a wet-cut drilling kit featuring the 1 in diamond hole saw, a suction-cup guide, GFCI cord, spray bottle, PPE, and a step-by-step card. Charge a weekend rate with a wear-and-tear fee; upsell additional hole saw sizes via a Quick Change-compatible system.
Creative
Perforated Tile Lantern
Cut a pattern of 1 in circles into porcelain or ceramic tiles to make four lantern panels, then assemble them into a cube around an LED candle. The vacuum-brazed diamond grit handles hard PEI 5 tile cleanly when used wet on a GFCI-protected circuit; deburr edges with a diamond hand pad for a soft glow.
Stone Dot Mosaic Coasters/Trivet
Core 1 in plugs from contrasting tiles or granite and inlay them into a base tile to create a dot-matrix pattern coaster or trivet. Reuse both the holes (filled with tinted epoxy/brass discs) and the plugs (polished and epoxied into recesses) for a high-contrast, heat-resistant set.
Planter Drainage Upgrade
Add a clean 1 in drainage hole to glazed ceramic pots and thrifted planters for healthier houseplants. Use gentle water feed and a GFCI-protected setup; back the pot with a rubber pad, then add mesh and a felt pad inside to keep soil from washing out.
Backsplash Pass-Through Port
Drill a 1 in hole in porcelain backsplash tiles for a discreet cable grommet, soap dispenser, or filtered-water tap at a coffee bar. The segmented diamond grit limits heat and chip-out; mark, tape, and cut wet for a clean hole that hides under a trim escutcheon.
Garden Mobile from Tile Plugs
Collect the 1 in stone/tile core plugs the hole saw ejects and turn them into a wind chime or mobile. Polish edges, add a small pendant hole with a diamond pin bit, and string them with fishing line or brass wire for a durable, tinkling garden accent.