Infinity Tools Art-Deco Replacement Knife for Insert-Pro Extended Tenon Head

Infinity Tools Art-Deco Replacement Knife for Insert-Pro Extended Tenon Head - View 3

$29.93 ~~$39.9~~ In stock

Designed to fit on Infinity Tools Insert-Pro Extended Tenon 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. These profiles allow you to cut mating cope ends when using our Interior / Exterior Door Making System.

Please note: Two (2) replaceable Insert-Pro knives are required per head, each sold individually.

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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 (5.0 / 5 · 5 reviews)

Hazel ★★★★★ Oct 22, 2026

I’ve been running these knives on my tenon head for a few weeks now, and the C4 sub-micron carbide is holding its edge far longer than any brazed cutter I’ve used before. The fit on the Insert-Pro head was snug and precise, no wobble at all. Clean cuts on hard maple, zero tear-out so far.

Abigail ★★★★★ Oct 21, 2026

The C4 sub-micron carbide is noticeably sharper than standard cutters I've used, and it held that edge through a full run of tenons without any burning. This knife is a solid upgrade if you're running large shaper heads.

Chloe ★★★★★ Oct 20, 2026

Used these in the tenon head on a pretty heavy run of white oak and they held the edge far longer than the old brazed cutters I was swapping out. The sub-micron grade really does make a difference in the cut finish.