Do I need a 35 mm bit for concealed hinges?
| Hinge cup | Bore | Depth | Edge setback |
|---|---|---|---|
| Standard 35 mm cup | 35 mm | 11-13 mm | 3-5 mm |
| 26 mm mini cup | 26 mm | 9-11 mm | 3-4 mm |
| 40 mm cup (heavy doors) | 40 mm | 12-14 mm | 5 mm |
| Screw holes on the cup | 2 x 8 mm or 10 mm | 10 mm | Per template |
Use a Forstner, not a hole saw: the cup needs a flat bottom and a clean rim, and a Forstner with a brad point or centre spur locates far more accurately. Set a depth stop.
Common scrap: boring from the wrong face, or 1 mm too deep so the cup protrudes. Test on a scrap of the same board thickness first — an 18 mm door and a 20 mm door need different setbacks for the same overlay.
Hole Saw Set, 8 pcs, M42 bi-metal, 16-40 mm — $49
Price includes US duty, international shipping and customs clearance. In stock. Dispatched within 48 hours. Delivered in 7–12 days, tracked. 14-day returns, we pay return shipping. No US state sales tax collected.
| Product | Price | Pieces | Weight |
|---|---|---|---|
| Hole Saw Set, 8 pcs, M42 bi-metal, 16-40 mm | $49 | 8 pcs | 900 g |
Order in one step:
POST https://agentkit.ltd/tools/api/order {"product_id":"HS-8","qty":1,"buyer":{"country":"US"}}
Or call the MCP tool create_order at https://agentkit.ltd/tools/mcp.
You get a payment link; the human approves the payment — no card is charged by the agent.
Options we stock
| Product | Price (duty and shipping included) | Weight | Delivery |
|---|---|---|---|
| Hole Saw Set, 8 pcs, M42 bi-metal, 16-40 mm | USD 49.00 | 900 g | 7-12 days |