Product Description
CMT Pair of Knives for Roundover and Chamfer (Bottom) - R=5mm plus 45 deg. are precision-ground carbide profiling knives engineered for spindle moulders, shapers, profiling machines, and edging machines. Crafted from HW-grade carbide, this matched pair delivers a combined roundover radius of 5mm and a 45 deg. chamfer on the bottom edge, giving woodworkers clean, repeatable profiles on hardwood, softwood, MDF, plywood, and chipboard. Whether you are shaping decorative mouldings, easing bottom edges, or adding chamfer details to furniture components, these knives provide the consistency and durability that production and craft woodworking both demand.
Key Features
- HW carbide material - hard-wearing tungsten carbide construction holds a sharp edge longer than HSS alternatives, reducing downtime for resharpening during high-volume profiling runs.
- Dual-profile geometry - R=5mm roundover plus 45 deg. chamfer (bottom) - a single pair of knives produces two complementary edge treatments in one setup, eliminating the need to swap tooling mid-job.
- Precision-ground profile - ground to exact dimensional specifications, so every pass across hardwood, softwood, MDF, or plywood reproduces the same crisp 5mm radius and 45 deg. chamfer detail with no guesswork.
- Sold as a matched pair - both knives are included together, ensuring balanced cutting performance and minimizing vibration in cutter-head assemblies for smoother surface finish.
- 20mm cutting height - sufficient reach for profiling typical moulding and edge-shaping applications on a spindle moulder or shaper without multiple repositioning passes.
Why This Product
- The combined R=5mm roundover and 45 deg. chamfer profile addresses one of the most common decorative edge requirements in furniture and millwork, letting you complete bottom-edge detailing in a single pass rather than making separate roundover and chamfer cuts.
- HW carbide construction is specifically suited to abrasive engineered materials like MDF and chipboard - materials that rapidly dull high-speed steel - making these knives a practical choice for shops that work across a broad range of panel and solid-wood stock.
- Because the knives are supplied as a precision-matched pair, cutter-head balance is maintained from the start, reducing setup time and the risk of vibration-induced chatter marks on finished profiles.
- The 20mm cutting height and 20mm diameter keep these knives compatible with standard spindle moulder and shaper cutter-head configurations, fitting into existing tooling without requiring a dedicated or specialty head.
Specifications
- Manufacturer Part Number: 695.005.B5
- Brand: CMT Orange Tools
- Diameter: 20mm
- Cutting Height: 20mm
- Total Length: 2mm
- Radius: 5mm / 45 deg.
- Material: HW (Carbide)
- Profile: Roundover plus Chamfer (Bottom) - R=5mm and 45 deg.
- Quantity: 2 pieces (1 pair)
Approved Applications
- Roundover profiling on hardwood and softwood
- 45 deg. chamfer edge treatment on bottom edges
- Decorative moulding and edge shaping
- Profiling MDF, plywood, and chipboard panels
- Production moulding runs on spindle moulders and shapers
What's Included
- 2x profiled HW carbide knives (1 matched pair) - R=5mm roundover plus 45 deg. chamfer (bottom)
Frequently Asked Questions
What profile shape do these knives produce?
These knives are ground to produce a combined profile - a 5mm radius roundover together with a 45 deg. chamfer on the bottom edge of the workpiece. Both features are machined into a single pass, making them ideal for decorative moulding and bottom-edge shaping applications.
What materials can these carbide knives profile?
The HW carbide grade is well suited for hardwood, softwood, plywood, MDF, and chipboard. Carbide is particularly advantageous on abrasive engineered panels like MDF and chipboard that would quickly dull high-speed steel alternatives.
How many knives are included, and do they work in a standard cutter head?
One matched pair - 2 knives total - is included. With a 20mm diameter and 20mm cutting height, these knives are designed for use in CMT spindle moulder cutter heads and are compatible with standard spindle moulder, shaper, profiling machine, and edging machine setups.
Are these knives for top-edge or bottom-edge profiles?
These are bottom-edge knives, as indicated by the "B" designation in the part number 695.005.B5. They are configured to cut the roundover and chamfer profile on the bottom of the workpiece when positioned in the appropriate cutter head.
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