Straight Mortising Bit Double Flute, 3/8" Dia. 1/2" Shank, 1" Cutting Height, 2-5/8" Length

Freud 12-108 Straight Mortising Bit For Clean Cuts

Freud 12-108 straight mortising bit is a 3/8 inch diameter router bit designed for general stock removal with a smooth finish, so it handles routine material removal and finishing passes in one tool. The 1/2 inch shank provides a solid grip in routers capable of that size, helping the bit track straighter during cuts in demanding setups. A 1 inch cutting height gives enough reach for typical mortises and dados in cabinetry and furniture work. The overall 2-5/8 inch length keeps the cutter compact, which supports stability when you are working in plywoods, hardwoods, softwoods, and composition materials. As a straight mortising bit in the router bits class, it fits into standard routing workflows where precise straight cuts and flat-bottom results matter.

Key Freud Straight Mortising Bit Work Advantages

• The 3/8 inch diameter focuses cutting force into a moderate-width path, which is useful for mortises and grooves where a consistent channel width matters across plywoods, hardwoods, and softwoods.
• The double flute design shapes two cutting edges along the bit, promoting balanced cutting that supports a smooth finish when performing general stock removal passes.
• The 1 inch cutting height lets the bit reach deeper than shallow trim passes, so you can rout mortises, dados, or clean recesses in composition materials without changing tools between depths.
• The 2-5/8 inch overall length keeps the bit relatively short, which helps limit deflection as you work in different wood-based materials and maintain more accurate straight-line routing.
• The straight mortising geometry is suited to producing flat-bottom cuts, which helps when preparing joints or recesses that must sit flush in cabinets, furniture, or built-ins.

Router Setup, Shank Size, And Cutting Approach

The 1/2 inch shank on this Freud router bit matches routers and collets sized for 1/2 inch tooling, which supports a secure grip for both handheld and table-mounted work. Using a 3/8 inch straight cutting profile, the bit works well when you need predictable sidewall alignment in grooves or mortises. The 1 inch cutting height offers flexibility to make multiple pass depths while keeping the same setup, which can streamline routing steps across different stock thicknesses. Because it is specified for general stock removal with a smooth finish, the bit plays a dual role in clearing material and leaving a surface ready for assembly or light sanding.

Using This Freud Router Bit In Woodworking

Where This Straight Mortising Bit Performs Best

This Freud Tool straight mortising bit is built for general stock removal with a smooth finish, so it suits tasks where you must remove material efficiently but still keep routed surfaces clean. Since it cuts all composition materials, plywoods, hardwoods, and softwoods, the bit can move from cabinet carcass work in plywood to solid hardwood face frames without a change in tool type. The 3/8 inch diameter is practical for routing mortises that accept matching tenons, as well as for running grooves sized for common spline or panel thicknesses. With its 1 inch cutting height, the bit can handle deeper slots or repeated passes in thicker stock while staying within the same routing setup. The straight mortising profile helps create flat-bottom cuts in these materials, which is useful when you are preparing recesses or joints that must seat evenly during assembly.

Why The Freud 12-108 Details Support Accuracy

The combination of a 1/2 inch shank and 2-5/8 inch overall length gives this router bit a compact yet solid form, which supports controlled movement in both hand-held and table-mounted portable routers. The double flute design means two cutting edges share the load, encouraging smoother chip removal and cleaner sidewalls during general stock removal. Because the bit is specified for use on CNC and other automatic routers as well as hand-held and table-mounted portable routers, it fits into varied shop setups without needing different cutting geometries for each machine. That versatility allows the same 3/8 inch straight mortising profile to be used in automated runs and manual touch-up work, supporting consistent dimensions from job to job. Its placement in the straight mortising category within router bits signals a focus on straight, flat-bottom work, which helps maintain repeatable joint quality across multiple parts in a project.

Common Questions About This Freud Mortising Bit

Choose This Bit For Consistent Straight Mortises

The Freud Tool straight mortising bit, part number 12-108, brings a 3/8 inch diameter, 1/2 inch shank, and 1 inch cutting height together for controlled stock removal in wood-based materials. Since it cuts all composition materials, plywoods, hardwoods, and softwoods, it fits typical shop and jobsite work where materials vary from project to project. Its ability to run in CNC, automatic, hand-held, and table-mounted portable routers simplifies tooling choices when moving between machines. For routing straight mortises, grooves, and flat-bottom recesses with a smooth finish, this bit is a practical choice to put into steady rotation on your routing jobs.