Bevel & Radius Replacement Knife for Insert-Pro Door Making Rail and Stile Set

Bevel & Radius Replacement Knife for Insert-Pro Door Making Rail and Stile Set - View 3

Bevel & Radius Replacement Knife for Insert-Pro Door Making Rail and Stile Set - View 4

Bevel & Radius Replacement Knife for Insert-Pro Door Making Rail and Stile Set - View 5

$26.73 ~~$39.9~~ In stock

Replacement Knives For Interior / Exterior Door Heads

Designed to fit on Infinity Tools Insert-Pro Interior / Exterior Door Making shaper heads, these knives are made from a C4 sub-micron grade of carbide that will last longer and outperform any brazed carbide cutters on the market. You will love the razor-sharp edges and precision-ground mirror finish. The quality of cut they produce is superb and sharpening is very simple. We offer five (5) popular door making profiles to give your Door Making System maximum versatility.

Please note: Two (2) replaceable Insert-Pro knives are required per each head (top & bottom), so a total of four (4) are required per set-up. Each knife is sold individually.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

Avery R. ★★★★★ Oct 21, 2026

These C4 sub-micron knives cut through hard maple like butter, and the fit on my Infinity shaper head was spot-on with zero adjustment. I'm really impressed with the clean finish they left on the door stiles, no sanding needed.

Andrew ★★★★★ Oct 18, 2026

The cut quality on these replacement knives is noticeably cleaner than the stock blades I was using, especially on the door panel profiles. They fit the shaper head perfectly without any wobble, and it's nice knowing the C4 sub-micron carbide will hold an edge for a long time. Exactly what I needed

Avery ★★★★☆ Oct 22, 2026

The C4 sub-micron carbide holds an edge noticeably longer than the cheaper sets I’ve burned through, though the fit on my hub needed a tiny bit of shimming. Cuts clean on the oak door rails I’ve run so far, so for the price it’s a solid step up.