Downcut Finishing Direction
Downcut flute direction supports controlled finishing engagement in compatible plastics, composites, and solid wood.


Solid-carbide downcut low-helix finisher for routing plastics and composites and for finish passes in solid wood. Its 1/2-inch cutting diameter, 2-1/8-inch cutting edge, 1/2-inch shank, three-flute geometry, and 4-1/2-inch overall length provide extended finishing reach in compatible CNC systems.
This three-flute solid-carbide tool combines downcut flute direction with low-helix finishing geometry for controlled routing in plastics, composites, and solid-wood finishing applications.
Designed for compatible CNC routers using a precision 1/2-inch (12.7 mm) collet or approved toolholding system with sufficient clearance for the 4-1/2-inch overall length.
The Royce Ayr 3-Flute Downcut Low Helix Finisher Router Bit R60-22307 belongs to Royce Ayr's 3-Flute Downcut Low Helix Finisher series. The manufacturer specifies this series for routing plastics and composites and for finish passes in solid wood.
Its downcut flute direction and low-helix geometry support controlled material engagement during finishing operations. The three-flute format is suited to compatible CNC routing when spindle speed, feed rate, and chip load are correctly matched.
The 0.5000-inch cutting diameter, 2.125-inch cutting edge, 0.500-inch shank, and 4.500-inch overall length require rigid, low-runout toolholding and adequate machine clearance. Before machining, verify collet condition, tool projection, spindle speed, feed rate, depth per pass, workholding, and chip extraction for the material being processed.
Technical Specifications
Downcut flute direction supports controlled finishing engagement in compatible plastics, composites, and solid wood.
Low-helix geometry is intended for finish-routing applications where controlled cutting action is required.
The 2-1/8-inch cutting edge and 4-1/2-inch overall length provide added reach for compatible CNC finishing operations.
Confirm that the CNC router spindle or toolholder accepts an exact 1/2-inch (12.7 mm) shank and provides sufficient clearance for the 4-1/2-inch (114.3 mm) overall length. Use rigid, low-runout toolholding, minimize unsupported projection where possible, and establish suitable spindle speed, feed rate, depth per pass, workholding, and chip extraction for the material being machined.
The Royce Ayr 3-Flute Downcut Low Helix Finisher Router Bit R60-22307 provides a solid-carbide solution for routing plastics and composites and for finish passes in solid wood.
Its 1/2-inch diameter and shank, 2-1/8-inch cutting edge, three-flute downcut low-helix geometry, and 4-1/2-inch overall length suit compatible CNC systems when the tool is correctly held and operated within appropriate machining parameters.