CNC WOODWORKING
Up Cut Spiral Router Bits
Up-cut spiral router bits are engineered with a standard right-hand cutting, right-hand spiral geometry. Functioning similarly to a mechanical drill bit, the aggressive spiral flutes actively draw wood chips, dust, and heat upward and out of the cutting zone during high-speed rotation. This continuous upward shearing action makes the up-cut bit the most efficient solid carbide tool for vertical chip evacuation. It is the definitive tooling choice for operations requiring deep blind slotting, heavy material removal, and high-feed roughing where preventing heat buildup from packed chips is a critical engineering requirement.
Applications & Tool Construction
Target Operations: Deep blind slotting, mortising, heavy-duty profiling, high-speed roughing, and aluminum extrusion routing.
Target Materials: Solid hardwoods, softwoods, raw MDF (unlaminated), thick acrylics, engineering plastics, and non-ferrous metals.
Tool Selection Note: If your application involves routing delicate double-sided veneers, melamine, or if you are experiencing unwanted top-edge tear-out, please explore our [Down-Cut Spiral Router Bits].
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Technical Features & Advantages
Maximum Chip Evacuation
The aggressive upward spiral geometry prevents waste material from re-cutting or packing within deep slots. This efficient clearing process drastically reduces friction, lowers tooling temperatures, and significantly extends the carbide's cutting lifespan.
Flawless Bottom Edge Finish
Because the cutting force shears the material in an upward direction, up-cut bits leave a remarkably clean, smooth finish on the bottom surface of the workpiece during through-cuts, requiring zero secondary sanding on that face.
High Feed Rate Compatibility
The superior cooling and chip removal capabilities inherent to the up-cut design allow CNC operators to program significantly faster feed rates compared to straight or down-cut router bits, maximizing overall production efficiency.
Working Principle of Up-Cut Spiral Geometry
The fundamental advantage of an up-cut spiral router bit lies in its mechanical lifting action, engineered to maximize chip clearance and tool cooling:
Accelerated Vertical Evacuation: The upward spiral flutes act as a high-speed auger, rapidly extracting hot waste material away from the cutting edge. This prevents chip packing in deep slots, drastically reduces friction, and allows CNC operators to push the machine to its maximum feed rates without burning the wood.
- Lifting Force & Hold-Down Requirement: Because the axial cutting force shears the material upwards, the tool naturally exerts a lifting action on the workpiece. While this leaves a perfectly clean finish on the bottom edge of the cut, it strictly requires a robust workpiece holding method (such as a high-capacity CNC vacuum bed) to prevent the material from shifting or lifting during the machining cycle.
Specification:
Below are some commonly used dimensions for reference. If you require other specifications or custom shapes, please feel free to contact us.
| Item Code | Outside Diameter | Flute Length | Overall Length | Shank Diameter |
|---|---|---|---|---|
| WU-1-0312 | 3 | 12 | 38 | 3 |
| WU-1-D317 | 3.175 | 17 | 38 | 3.175 |
| WU-1-0422 | 4 | 22 | 50 | 4 |
| WU-1-0525 | 5 | 25 | 50 | 5 |
| WU-1-0632 | 6 | 32 | 60 | 6 |
| WU-1-D642 | 6.35 | 42 | 76 | 6.35 |
| WU-1-D732 | 7.9 | 32 | 60 | 7.9 |
| WU-1-0842 | 8 | 42 | 70 | 8 |
| WU-1-D962 | 9.525 | 62 | 101 | 9.525 |
| WU-1-10100 | 10 | 100 | 150 | 10 |
| WU-1-1280 | 12 | 80 | 120 | 12 |
| WU-1-D1255 | 12.7 | 55 | 101 | 12.7 |
| WU-2-0328 | 3 | 28 | 50 | 3 |
| WU-2-D328 | 3.175 | 28 | 50 | 3.175 |
| WU-2-0425 | 4 | 25 | 50 | 4 |
| WU-2-D625 | 6.35 | 25 | 60 | 6.35 |
| WU-2-0862 | 8 | 52 | 80 | 8 |
| WU-2-10100 | 10 | 100 | 150 | 10 |
| WU-2-D1262 | 12.7 | 62 | 115 | 12.7 |
Why Choose Us
Professional & Team
we have multi top class production lines which help us to offer better performance tools and extend the range of our products. We follow standard procedures and have an excellent team of designers.
Quality
Every year, we spend a lot of money upgrading and maintaining our equipment.
OEM
We have many years of leading OEM and ODM manufacturing experience in this field.
I Stock & Delivery
We have an ample supply of goods in stock. Receiving goods as fast as 3 days around the world.
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