Compression Router Bits

Compression bits cut upward and downward simultaneously within the same flute path, which presses material fibers inward from both the top and bottom faces instead of pulling them outward the way a standard up-cut or down-cut bit does. The result is a clean edge on both sides of the material in a single pass.


Most useful on laminates, MDF, plywood, and veneer boards — anywhere a visible top surface and a visible bottom surface both need to come out splinter-free, which a single-direction bit can't guarantee on its own.


We carry compression bits from both Amana and Onsrud in this category; see our brand-specific collections if you're standardizing on one manufacturer.

Onsrud 15-40 Series Compression Dor Bits - CNC Router Store

Onsrud 15-40 Series Compression Dor Bits

$70.94

SKU: 15-43 LMT Onsrud

Crafted from high-speed steel, these precision bits are exclusively crafted for routing metal-clad doors. They minimise frayed edges, delivering a crisp finish. The innovative tool design effortlessly pierces steel, ensuring a superior cut for door lites and hardware openings. Features include:
- Upcut and downcut compression flutes to prevent fraying
- Single flute design for fast chip removal
- ESG coating for extended tool lifespan

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