Product Description
CMT Solid Carbide Up/Downcut Mortising Bit - 1/2" Diameter, DLCS Coated, RH is a premium compression spiral router cutter engineered for CNC routing applications that demand chip-free, tear-out-free surfaces on both faces of the workpiece simultaneously. Built entirely from solid micrograin carbide and protected by CMT's DLCS (Diamond-Like Carbon System) chrome coating, this 1/2" shank mortising bit delivers industrial-grade performance in plywood, MDF, laminates, melamine, hardwood, softwood, chipboard, and plastic. With a 2 + 2 tooth configuration combining upcut and downcut spiral geometry, it is purpose-built for through-cuts, mortising operations, and two-face finish work on CNC routing machines, router tables, and handheld routers alike.
Key Features
- Solid Carbide Construction - the entire bit body is manufactured from premium micrograin carbide, providing superior wear resistance and a longer cutting life compared to carbide-tipped designs, with the ability to withstand more resharpenings before replacement.
- DLCS Chrome Coating (Diamond-Like Carbon System) - a modified diamond-like carbon coating with enhanced load bearing capacity that dramatically extends tool life under the demanding thermal and mechanical stresses of industrial CNC operations, reducing downtime and replacement frequency.
- Up/Downcut Compression Geometry (2 + 2 Teeth) - simultaneous upcut and downcut spiral cutting action shears both faces of the workpiece cleanly in a single pass, eliminating surface tear-out and delamination on plywood, MDF, laminate, and melamine panels for finished-quality edges without secondary sanding.
- 1/2" Cutting Diameter x 7/8" Cutting Height - optimized proportions for mortising and through-cut work, providing a precise 1/2" kerf and a clean 7/8" cutting depth for consistent, repeatable results across production runs.
- 13/64" Secondary Cutting Height (I1) - the secondary cutting zone allows precise engagement geometry for the compression portion of the cut, ensuring the downcut section engages the bottom face cleanly for tear-out-free panel processing.
- 1/2" Shank, 3" Total Length, Right-Hand Rotation - the robust 1/2" shank ensures secure collet grip and minimal runout in CNC spindles and router table setups, while the 3" overall length provides clearance for through-cuts in standard panel thicknesses.
- Compatible with Hardwood, Softwood, Plywood, MDF, Chipboard, Laminates, Melamine, and Plastic - broad material compatibility makes this a single, versatile tooling solution for woodworking shops and CNC production facilities processing a wide range of substrates.
Why This Product
- For CNC operators cutting laminated panels, melamine-faced boards, or high-grade plywood, the up/downcut compression geometry eliminates the need for backing boards or double-sided tape to prevent face tear-out - both surfaces are sheared cleanly in a single pass, saving setup time and improving throughput.
- The DLCS modified diamond-like carbon coating is specifically described as having enhanced load bearing capacity, making this bit a better choice for sustained industrial CNC use than standard uncoated carbide bits, especially in demanding production environments where tool life directly impacts cost per cut.
- Solid carbide construction - rather than carbide-tipped - means the entire cutting body maintains hardness and geometry throughout its usable life, supporting more resharpenings and longer intervals between tool changes in high-volume routing operations.
- The 1/2" shank paired with a 3" total length provides the rigidity and reach needed for mortising and through-cut applications on CNC machines, where vibration and deflection at depth can otherwise compromise cut quality and dimensional accuracy.
Specifications
- Manufacturer Part Number: 190.515.41
- Brand: CMT Orange Tools
- Product Type: Solid Carbide Up/Downcut Mortising Bit
- Diameter: 1/2"
- Cutting Height: 7/8"
- Secondary Cutting Height: 13/64"
- Total Length: 3"
- Shank: 1/2"
- Number of Teeth: 2 + 2
- Blade Material: Solid Carbide
- Coating: DLCS (Diamond-Like Carbon System) Chrome Coating
- Rotation: Right-Hand (RH)
- Compatible Material: HWM (Hardwood, MDF, and related wood composites)
- Macro Class: Router Cutter
Approved Applications
- CNC Routing
- Mortising
- Through-Cuts in Plywood and MDF
- Two-Face Finish Cuts in Laminates and Melamine
- Panel Processing in Chipboard and Plastic
- Router Table Operations
- Handheld Router Work
Frequently Asked Questions
What does the up/downcut compression design actually do for the finished cut?
The 2 + 2 tooth configuration combines upcut and downcut spiral flutes that work simultaneously. The upcut flutes shear the bottom face of the workpiece cleanly, while the downcut flutes shear the top face, so both surfaces are left tear-out-free in a single pass. This makes it particularly effective for through-cuts in plywood, MDF, laminate, and melamine where surface quality on both faces matters.
What is DLCS coating and why does it matter for tool life?
DLCS stands for Diamond-Like Carbon System and is described as a modified diamond-like carbon coating with enhanced load bearing capacity. This coating is specifically developed for industrial CNC tooling and helps the bit withstand the high thermal and mechanical demands of production routing, extending tool life beyond what standard uncoated solid carbide bits would achieve in comparable applications.
What shank size does this bit require, and which machines is it compatible with?
This bit uses a 1/2" shank and is compatible with CNC routing machines, router tables, and handheld routers equipped with a 1/2" collet. The 1/2" shank provides a rigid, low-runout connection that is especially important for mortising and deep through-cut operations where lateral forces on the bit are highest.
What materials can this bit cut through effectively?
According to the product data, this solid carbide up/downcut mortising bit is suitable for solid hardwood, softwood, plywood, MDF, chipboard, laminates, melamine, and plastic. The compression geometry and DLCS-coated solid carbide construction make it particularly well-suited for engineered wood panels and laminated surfaces where clean face quality on both sides is required.
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