Atlas Tools
Up-Spiral Plastic Router Bit - 4x12
Built for clean cutting, reliable tool life and professional results.
$55.00
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Specifications
Precision cutting. Clean results.
Purpose-built for clean top-edge plastic machining, this Plastic Down Spiral Router Bit is optimised for acrylic, PVC, polycarbonate and HDPE. The single-flute down-cut geometry pushes the material into the bed, helping reduce lifting, vibration, and top-edge chipping. With a cutting size of 4mm × 12mm, it’s a strong choice for sheet work, profiles, shallow pockets, and jobs where the visible top edge matters.
Key benefits
Clean top-edge finish helps reduce chipping and breakout on the visible face of plastic sheets.
Polished cutting edge supports smoother cutting and helps reduce heat build-up in plastics.
The single-flute design helps manage heat and chip load, reducing melting, gumming, and re-welding.
Down-cut geometry improves material hold-down, helping keep thin sheets flatter during routing.
High-quality carbide for rigidity and accuracy—less deflection and better edge control.
| Spec | Result |
|---|---|
| Diameter | 4mm |
| Cut Length | 12mm |
| Shank (Collet Size) | 4mm |
| Overall Length | 38mm |
| Flutes | 1 |
| Cut Direction | Down Spiral / Down-Cut |
| Coating | None |
Down-cut geometry for clean top-edge results
The down-spiral flute pushes cutting pressure downward, helping hold the sheet against the spoilboard and protect the visible top surface. This is especially useful for plastic signs, panels, and components where a clean top edge is the priority.
The single-flute design provides more chip space than multi-flute tools, helping control heat and reduce melting when routing acrylic, PVC, polycarbonate, and HDPE.
Applications and benefits
Ideal for sign makers, fabricators and CNC users cutting acrylic sheet, PVC foam board, polycarbonate, HDPE, and general plastics. The 4mm diameter gives extra strength over smaller 3.175mm tools, while the 12mm cut length suits thinner sheet work and controlled profiling where top-edge finish is critical.
Why Atlas?
Longer tool life
Built for durability and wear resistance.
Cleaner cut edges
Engineered for best quality.
Best Carbide
Better Results
Numerous Coatings
Reduces friction, heat and promotes long tool life.
MUST HAVE PRODUCTS
Hand-picked products and collections that pair well with this item.
PRODUCT FEATURES
Key features engineered for cleaner cuts, longer tool life and better machining performance.
Polished Flutes
For Maximum Chip Evacuation and reduction of heat
Excellent Chip Evacuation
Reduce clean-up on big parts
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SUITABLE MATERIALS
This tool is recommended for the following materials.
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