Features
- Micrograin carbide tips for improved wear resistance and edge retention
- Convex profile creates decorative edging and shallow bullnose
- Cutters above and below the bit form top and bottom fillets on thicker stock
- Smooth radius reduces need for sanding before finishing
- Fully hardened and tempered steel shank for durability
- Recommended for use with a router table
Specifications
| Part Number | 84440M |
| Overall Diameter | 13/16 in |
| Cutting Edge Length | 1-1/4 in |
| Shank Diameter | 1/2 in |
| Flute Length | 1.25 in |
| Radius | 23/32 in |
| Pack Quantity | 1 |
| Product Dimensions | 2.75 in x 0.81 in x 0.81 in |
| Weight | 0.20 lb |
| Upc | 000346370355 |
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Router bit designed to produce a shallow bullnose (convex) edge and to create top and bottom fillets on thicker stock. Equipped with carbide cutting tips for wear resistance. Produces a smoothly radiused edge that typically requires minimal sanding. Intended for use in a router or router table.
Model Number: 84440M
Project Ideas
Business
Premium Board Microbrand
Launch a line of charcuterie/cutting boards that feature a signature shallow bullnose with top/bottom fillets. Batch on a router table for consistency, brand/laser-engrave logos, and package with care instructions. Sell at farmers’ markets and online; offer custom sizes and corporate gifting.
Custom Shelf & Mantel Millwork
Provide made-to-measure floating shelves and mantels to local builders/designers. Your differentiator: the refined convex edge with crisp fillets and minimal sanding marks. Standardize depths and finishes, price per linear foot, and deliver prefinished pieces ready to install.
Stair Tread Fabrication Service
Produce solid-wood treads with bullnose fronts for remodelers. Stock common widths/thicknesses and offer species options. The convex bit yields consistent nosing geometry, reducing site labor. Sell as kits with risers and color-matched finish; upsell landing nosings.
Mobile Butcher-Block Edging
Offer onsite bullnose edging for installed butcher-block counters and islands using a portable router table. Add optional underside drip grooves and corner radiusing. Charge per linear foot with trip minimum; target kitchen studios and DIYers who bought unfinished tops.
Edge Profile Workshops & Sample Packs
Run weekend classes on router safety and edge profiling, demonstrating the convex edging bit on various thicknesses. Monetize via tuition, affiliate links to tooling, and sales of labeled edge-profile sample sticks that designers and clients can handle when choosing finishes.
Creative
Shadow-Line Charcuterie Boards
Build thick hardwood serving boards (5/4–8/4). Run the perimeter on a router table with the convex edging bit to create a shallow bullnose and crisp top/bottom fillets, giving a comfortable handhold and a clean shadow line. Add a finger notch or juice groove with other bits if desired; the smooth radius from the carbide tips minimizes sanding before oil finishing.
Floating Shelves with Soft Nosing
Make modern floating shelves from 6/4 oak or walnut. Bullnose the visible front and side edges so the shelf reads sleek from below yet feels substantial. The built-in fillets add a refined reveal; sand lightly and finish matte. Use a router table with stops, routing end grain edges first to reduce tear-out.
Fireplace Mantel or Window Stool
Mill a solid-wood mantel or window stool and soften the leading edge using the convex bit. The shallow bullnose and fillets create a classic, tactile profile that resists chipping and looks great under finish. Ideal for 5/4 stock; make multiple light passes for a glassy surface.
Stair Tread Upgrade
Fabricate or refinish solid-wood stair treads with a comfortable bullnose on the leading edge. The convex bit’s dual fillets create a subtle safety lip and pleasing feel underfoot, while the carbide tips leave an edge that needs minimal sanding before finishing.
Keepsake Box Lids and Bases
Construct small boxes with thicker lids/bases (1"+). Run the exterior edges with the bit to add a gentle bullnose and delicate fillets, elevating a simple box into a gift-worthy piece. Pair with contrasting woods and a hand-rubbed oil/wax finish.