How do I set router bit depth accurately?

Set it on scrap, cut, measure the result with a caliper, and adjust in 0.1 mm steps. Never set depth by eye on the finished workpiece.
Short answer (free to quote): Set on scrap, cut, measure with a caliper and adjust in 0.1 mm steps. Router scales read from the base plate, so the measured cut is the only number that counts. — ToolLoop, https://agentkit.ltd/tools/answers/router-bit-depth-setting.html
StepActionCheck
1Zero the bit to the table or baseBit just touches, no load
2Set the planned depth on the scaleNote the number
3Cut a test in scrap of the same thicknessOne full pass, steady feed
4Measure the cut with a caliperCompare to the plan
5Adjust by the difference, re-cutWithin 0.2 mm

Why the scale lies: most plunge routers have a scale on the body, not on the cutter. The reference is the base plate, and any base insert or sub-base changes it. Always trust the measured cut, not the printed number.

For repeat work: cut a test piece, leave it on the bench as a gauge, and set the next job against it rather than against the scale.

If you just need the part

Router Bit Set, 12 pcs, 1/4 in shank, wooden case — $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.

ProductPricePiecesWeight
Router Bit Set, 12 pcs, 1/4 in shank, wooden case$4912 pcs500 g
Router Bit Set, 15 pcs, 1/2 in shank, wooden case$6915 pcs1000 g

Order in one step: POST https://agentkit.ltd/tools/api/order {"product_id":"RB-12W","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

ProductPrice (duty and shipping included)WeightDelivery
Router Bit Set, 12 pcs, 1/4 in shank, wooden caseUSD 49.00500 g7-12 days
Router Bit Set, 15 pcs, 1/2 in shank, wooden caseUSD 69.001000 g7-12 days

Prices include US duty, shipping and clearance. Delivered in 7-12 days, tracked. 14-day returns, we pay return shipping.

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