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12mm Compression Spiral Bit – 1/2″ Shank (AstraHP Coated)

A true-metric compression spiral built for CNC cabinet production. Designed for clean top and bottom edges in sheet goods, with a rigid 1/2″ shank and AstraHP coating for consistent performance in full-sheet, nested workflows.

12mm Compression Spiral Bit – 1/2″ Shank (AstraHP Coated) - Main image
$61.99 $99.99 In stock

Category: Compression CNC Router Bits

This metric 12mm compression spiral is engineered for commercial cabinet shops running metric CAD/CAM programs and cutting sheet goods all day. The cut diameter is ground true to metric—no imperial rounding—so toolpaths, offsets, and part dimensions remain exact from program to part.

The compression geometry delivers clean top and bottom edges in melamine, plywood, and prefinished panels, while the 1/2″ shank provides the rigidity required for nested-based manufacturing and full-sheet passes. AstraHP coating helps manage heat and edge wear in abrasive panel materials, extending tool life and maintaining cut quality over long runs.

This is a CNC-only production tool intended for professional cabinet and furniture workflows.

• Cut Diameter: 12mm
• Shank Diameter: 1/2″
• Geometry: Compression Spiral
• Coating: AstraHP
• Application: Sheet Goods
• Machine Type: CNC Only

Made in USA

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Customer Reviews (4.8 / 5 · 5 reviews)

Harper Z. ★★★★★

The 12mm grind is dead-on metric, so I finally stopped fighting the offset in our CAD files. Clean top and bottom edges on melamine with barely any tearout, and the coating still looks new after a few hundred sheets.

Joshua X. ★★★★★

Swapped this into our nesting setup and the metric diameter is dead on, so the toolpaths from our CAD software finally match the actual cut. Clean top and bottom edges on melamine with barely any tearout, and the coating still looks fresh after a full week of sheet goods.

Robert ★★★★★

First time running a true 12mm compression and the edge on melamine is dead clean top and bottom, no chip-out at all. The metric grind actually matches my CAD files instead of fudging the offsets. Coating still looks new after a few sheets of ply.