Ultra-Shear Metric Half-Round Bit 1/2 SH | 12mm | 2 FL | Carbide Head | USA Made - US512MHR

SPECS - US512MHR | 1/2" Shank | 12mm Cut Diameter | 2 Flute | Carbide Head | Up-Cut | Metric Half-Round Router Bit | USA Made

Metric Half-Round Bits Size Chart

Ultra-Shear Metric Half-Round Bits

Precision Engineering for Custom Loose Tenons

Ultra-Shear Metric Half-Round Bits are specifically designed to solve the problem of creating custom loose tenon stock that perfectly fits Festool Domino mortises. While standard "inch" round-over bits rarely provide a seamless fit, these metric bits are machined to exact tolerances. By using the "Carbide Head" design—brazing solid carbide to a steel shank—these bits combine the superior cutting geometry of a spiral bit with the durability and economy required for heavy shop use.

Perfect Sizing for Domino Systems

• DF-500 Compatible Sizes: 4mm, 5mm, 6mm, 8mm, and 10mm.

• DF-700 Compatible Sizes: 8mm, 10mm, 12mm, and 14mm.

• Available individually or in specialized 4-piece and 5-piece sets tailored to your specific Domino machine.

Whether you're working on delicate furniture or heavy-duty architectural framing, these bits ensure your custom tenons seat perfectly every time.

Ideal for Decorative & Exposed Joinery

Standard pre-made Domino tenons are highly functional but often lack visual appeal for "through" joints because of their glue grooves. Ultra-Shear Metric Half-Round bits allow you to mill your own tenon stock from any wood species, enabling you to create beautiful exposed joints with matching or contrasting wood. This turns a structural necessity into a signature design element of your project, with the added benefit of ensuring even glue distribution without hydraulic pressure buildup.

Tool Compatibility

Versatility Beyond CNC

While these bits are excellent for automated CNC production of tenon stock, they are primarily intended for use in router tables. By machining the thickness of your material to match your mortise and then running both edges through the router table, you can create perfectly radiused tenon stock with total control. They are also highly effective in horizontal routing systems or multi-routers for creating specialized joinery that goes beyond standard Domino widths.

Material Compatibility

Designed for high-quality results in various materials:

• Hardwoods & Softwoods: Creates crisp, burn-free radiuses in everything from pine to white oak and walnut.

• Exotic Woods: The spiral "Carbide Head" geometry handles dense, oily, or brittle exotics without tear-out.

• MDF & Plywood: Useful for creating rounded edges on custom jigs or shop-made loose tenon templates.

American-Made Quality & Direct Value

Manufactured in Strongsville, Ohio, these bits reflect Woodpeckers' commitment to precision and direct-to-consumer value. By removing the middleman, Ultra-Shear provides premium American-made bits that perfectly match international metric standards, giving you the best of both worlds for your modern joinery needs.