Features
- Patented tooth form to optimize chip removal
- Large continuous slot for plug ejection
- High-speed steel cutting edge for use in wood, metal, and plastic
- Deeper saw body for cutting 2-by material in one pass
- Manufactured in the USA with global materials
- Maximum drilling depth: 1-3/4 in (44 mm)
Specifications
| Diameter | 3-3/4 in (95 mm) |
| Cutting Depth | 1-3/4 in (44 mm) |
| Blade Material | Bi-metal |
| Pilot Drill Diameter | 0.25 in |
| Minimum Chuck Size | 1/4 in |
| Bit Type | Hole saw |
| Application | Multipurpose |
| Number Of Pieces | 1 |
| Case Included | No |
| Has Plug Eject | Yes |
| Color | Yellow |
| Made In | USA (with global materials) |
Related Tools
Related Articles
Bi-metal hole saw designed for cutting wood, metal, and plastic. The tooth geometry is intended to improve chip removal. The saw includes a large slot for plug ejection and a deeper body to allow cutting 2-by dimensional lumber in a single pass. Manufactured in the USA with globally sourced materials.
Project Ideas
Business
Boat/RV Cup Holder Retrofits
Offer a mobile service installing stainless 3-3/4 in cup holders in boats, RVs, golf carts, and side‑by‑sides. The hole saw’s deeper body cuts cleanly through 2x backing blocks and composite panels, and the bi‑metal edge handles fiberglass skins and aluminum trim with care. Upsell with drainage hoses and LED‑lit holders.
Custom Hydroponic Lids
Produce DWC tote and bucket lids with 3.75 in net‑pot cutouts. Market to home growers and garden shops. The saw’s chip‑clearing tooth form helps when batch‑drilling HDPE and PVC sheets; clean edges mean snug pot fits. Brand with stickers and sell in multi‑site layouts (4, 6, 8 pot) for common totes.
Office Desk Grommet Installs
Provide on‑site drilling and installation of 95 mm cable grommets and trash chutes for offices and coworking spaces. The bi‑metal hole saw handles laminate, MDF, hardwood edging, and thin aluminum cable trays. Package services per desk, including grommets, brush inserts, and wire management.
Van/Bus Vent Cutouts
Specialize in cutting and fitting 95 mm round louvered vents or intake flanges in van and bus conversions. The multipurpose teeth cut body panels and plywood liners; pair with primer and rust‑proofing upsells. Offer templates and quick‑turn appointments for builders who need consistent, clean apertures.
Upcycled Round Coasters & Art
Turn workshop offcuts into finished 3-3/4 in coasters, trivets (stacked), and circular wall art tiles. The plug‑eject slot speeds production, while consistent sizing enables batching and pattern sets. Sell wholesale to boutiques or direct at markets; add laser‑engraved logos for corporate gifts.
Creative
DIY 4-inch Speaker Box
Build a compact Bluetooth speaker or bookshelf pair and use the 3-3/4 in hole saw to cut precise driver openings for most 4 in full‑range speakers and passive radiators. The deeper body lets you cut through 2x panels in one pass, and the bi‑metal edge handles plywood and thin sheet metal grills. Finish the disks (plugs) as matching feet or knobs using the plug‑eject slot to save them.
Backlit Circle Wall Art
Create a geometric wall panel by drilling a grid of 3-3/4 in perforations in plywood or MDF. Back the panel with translucent acrylic and LED strips for a halo effect. The patented tooth form helps clear chips for clean edges in thick 2x stock, and the continuous slot makes it easy to remove large plugs for use as separate painted dots or accents.
Patio Rail Cup-Holder Shelf
Make a narrow cedar or pressure‑treated shelf that mounts along a deck or balcony rail with recessed cup holders. Many stainless marine cup inserts call for a 3-5/8 to 3-3/4 in cutout, so this size is ideal. Cut cleanly through 2x material in a single pass and seal the edges; the multi‑material edge also cuts plastic liners if you add them.
Coffee Bar Trash/Crumb Chute
Upgrade a kitchen or coffee cart by drilling a 3-3/4 in hole to drop in a plastic or stainless counter chute for grounds and crumbs. The bi‑metal teeth handle laminate, hardwood, and thin metal caddies. Use the saved wood plug as a matching cap when the chute isn’t in use.
Reclaimed Wood Coaster Set
Drill into reclaimed hardwood slabs to harvest uniform round plugs as coasters. Sand, add a shallow groove on a router for a condensation channel, and finish with oil or epoxy inlays. The plug‑eject slot helps keep production moving, and the consistent 3-3/4 in size makes attractive, substantial coasters.