CMT 190.507.41 Solid Carbide Up/Downcut Spiral Bit is a professional-grade compression spiral router bit designed for CNC routing applications that demand chip-free, clean cuts on both faces of a workpiece simultaneously. With a 1/2 in. cutting diameter and a 2+2 tooth compression geometry, this bit combines an upcut spiral and a downcut spiral in a single solid carbide body - pulling chips upward on the lower face and pressing material downward on the upper face - so that plywood, MDF, laminates, and melamine exit the cut with smooth, tear-free surfaces on both sides. The bit is finished with DLCS - a modified diamond-like carbon coating engineered for enhanced load bearing capacity - giving it extended service life under demanding industrial CNC production conditions.

Key Features

• Solid Carbide Construction (HWM micrograin material) - the entire cutter body is manufactured from premium micrograin carbide rather than a steel body with brazed tips, delivering superior wear resistance and allowing more resharpening cycles before the bit must be replaced, reducing long-term tooling cost.
• Up/Downcut Compression Geometry (2+2 tooth configuration) - the simultaneous upcut and downcut spiral action compresses the workpiece from both faces during a through-cut, eliminating fiber tearout and delamination on the top and bottom surfaces and removing the need for a secondary sanding or trimming operation.
• DLCS Modified Diamond-Like Carbon Coating - this advanced surface treatment provides enhanced load bearing capacity beyond standard coatings, reducing friction and heat buildup during high-feed CNC passes and extending the usable life of the cutter in continuous industrial production runs.
• 1/2 in. Shank Diameter - matches the most common CNC router collet size for secure, low-runout tool holding, contributing to dimensional accuracy and consistent cut quality across a full production batch.
• 1 3/8 in. Cutting Height with 15/32 in. Lower Cutting Zone - the 1 3/8 in. total flute length accommodates material thicknesses commonly encountered in cabinet and furniture production, while the precisely defined 15/32 in. lower cutting height controls the position of the compression zone relative to the workpiece face.
• Right-Hand (RH) Rotation - compatible with the standard spindle rotation direction of virtually all CNC routing machines and fixed-base or plunge routers, so no special machine setup or collet adaptation is required.
• 3 1/2 in. Total Length - provides adequate clearance between the collet and workpiece surface during through-cut operations on typical CNC spoilboard setups without introducing excessive overhang.

Why This Product

• Clean both-face finish in a single pass - the 2+2 compression spiral geometry makes this bit the correct choice for through-cutting laminated panels, melamine board, and plywood where tearout on either face is unacceptable, eliminating rework and scrap.
• Built for industrial CNC production demands - the combination of solid micrograin carbide construction and DLCS modified diamond-like carbon coating means the bit is engineered specifically for the continuous, high-feed-rate conditions of CNC routing machines, not just occasional handheld router use.
• Extended tool life between resharpenings - solid carbide bits can be resharpened multiple times, and the DLCS coating's enhanced load bearing capacity slows wear further, making this bit a cost-effective choice for shops running high volumes of sheet goods.
• Broad material compatibility in a single tool - the compression geometry and carbide construction handle solid hardwood, softwood, plywood, MDF, chipboard, laminates, melamine, and plastic within a single tool, reducing the number of specialty bits needed in a production environment.

Specifications

• Manufacturer Part Number: 190.507.41
• Brand: CMT Orange Tools
• Product Type: Solid Carbide Up/Downcut Spiral Router Bit
• Diameter: 1/2 in.
• Cutting Height: 1 3/8 in.
• Lower Cutting Height: 15/32 in.
• Total Length: 3 1/2 in.
• Shank Diameter: 1/2 in.
• Number of Teeth: 2 + 2
• Blade Material: Solid Carbide (HWM micrograin)
• Coating: DLCS (modified diamond-like carbon)
• Rotation: Right-Hand (RH)
• Product Class: Router Cutter - Compression Spiral

Approved Applications

• CNC through-cuts in plywood and hardwood plywood
• Through-cuts in MDF and chipboard
• Two-face finish cuts in laminated panels and melamine board
• CNC routing of solid hardwood and softwood
• Routing plastic sheet material
• Cabinet and furniture panel production requiring chip-free edges on both faces
• Router table through-cut operations