Accupro 71177943 Spiral Upcut Router Bit 1/4 in Solid Carbide

Product Description

The ACCUPRO 71177943 is a solid carbide spiral upcut router bit designed for precise cutting in plastics and engineered materials. With a 0.25 inch cutter diameter, a 0.75 inch length of cut, and a 0.25 inch shank diameter, this bit fits standard 1/4 inch collet routers commonly used in CNC routing and handheld router applications. The upcut flute geometry evacuates chips away from the workpiece, helping to keep the cut path clear and reducing heat buildup. The 21-degree helix angle and right-hand cutting direction provide clean entry and consistent chip flow. The uncoated bright finish is suited for direct use without additional preparation.

This bit is intended for routing, profiling, and slotting operations in thermoplastic and engineered sheet materials. Rated material applications include ABS, acrylic, HDPE, HIPS, PE, PET, POM, PS, polycarbonate, polypropylene, solid surfaces, and UHMW. It is well suited for sign-making shops, fabrication environments, and production CNC operations where clean edge quality in plastic stock is required. The single-edge design reduces cutting forces on thin or flexible workpieces.

Key Features

• Solid carbide construction for durability and edge retention in abrasive materials
• Upcut flute design evacuates chips away from the cut for cleaner passes
• 21-degree helix angle provides smooth cutting action in plastics
• Single-edge router style reduces cutting pressure on thin sheet stock
• Right-hand cutting direction compatible with standard CNC and handheld router setups
• Uncoated bright finish ready for immediate use out of the package

Compatibility

Designed for use with routers equipped with a 1/4 inch collet. Rated for ABS, acrylic, HDPE, HIPS, PE, PET, POM, PS, polycarbonate, polypropylene, solid surfaces, and UHMW. Not piloted; not intended for use with guide bearings.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator with the router fully powered down and the collet lock engaged before bit changes. Insert the shank to the full depth of the collet and tighten to the router manufacturer's specified torque. Verify spindle direction matches the right-hand cutting orientation of this bit before operating. Eye protection and appropriate dust collection are standard practice when routing plastics.