Onsrud 57-000 Series Downcut Spiral Router Bit
Why Choose an Onsrud Downcut Bit for CNC Routing?
If you're working on CNC projects requiring clean surface finishes, the Onsrud Downcut Bit from the 57-000 series delivers superior results. Designed for precision cutting of wood, plastic, and composite materials, this router bit features a downcut spiral geometry that pushes chips down and away from the cutting surface, preventing frayed edges and splintering.
The Onsrud 57-000 series is a favorite among professional woodworkers and industrial fabricators who rely on clean, crisp top-edge finishes—especially on veneered plywood, MDF, and laminates. Whether you're running high-volume jobs or one-off prototypes, this bit offers consistent quality and durability.
H2: CNC Router Bit for Smooth Top Edges and Clean Finishes
One of the main advantages of using a CNC router bit with a downcut spiral is its ability to maintain surface integrity. Unlike upcut bits, which tend to lift and fray materials on the top layer, downcut bits provide downward chip removal, ensuring a smooth top layer.
The Onsrud Downcut Bit works exceptionally well with:
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Veneered plywood
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Laminated boards
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MDF and particleboard
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Acrylics and plastics
This makes it ideal for cabinetry, furniture components, signage, and decorative panels—any job where a clean visible surface matters.
The Onsrud 57-000 Series Downcut Spiral Router Bit is engineered for professionals seeking high-quality finish on top surfaces during CNC routing. Its downcut geometry pushes chips downward, minimizing surface splintering and delivering exceptionally smooth edges. Made from premium solid carbide, this bit is optimized for high-performance cutting in plywood, MDF, hard and soft wood, plastics, and laminates. Available in multiple diameters and lengths, the 57-000 series is an ideal choice for cabinetry, signage, and detailed woodworking applications.
Key Features of the Onsrud 57-000 Downcut Spiral Bit
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Solid carbide construction for long life and heat resistance
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Downward chip ejection for a clean top surface
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Ideal for wood, composites, and some plastics
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Available in multiple flute designs and diameters
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Made in the USA by industry leader Onsrud
Recommended Applications for This CNC Router Bit
The Onsrud 57-000 Downcut Bit is commonly used in:
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CNC panel cutting
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Cabinetmaking
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Sign making
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Furniture manufacturing
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Decorative engraving
For shop owners running precision routers like MultiCam, ShopSabre, AXYZ, or Laguna CNC machines, this bit is fully compatible and ensures a clean, efficient cut every time.
Buy Onsrud Downcut Bits Online from CNC Router Store
We carry the full line of Onsrud router bits, including the 57-000 series, with fast shipping and expert customer service. Whether you need one bit or bulk quantities for your production shop, CNC Router Store provides genuine Onsrud tooling you can trust.
Need help choosing the right CNC router bit? Our team is happy to guide you to the best tool based on your material and cutting needs.
