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corner rounding bit 3/4 radius describes this Amana Tool 2-7/8 x 3/4 Radius Corner Rounding Bit with Ball Bearing Guide, 2-Flute, 1/2 Shank, giving installers a defined 3/4 inch radius profile for repeatable edge work. This bit is a basic edge-forming router bit, so it focuses on rounding and profiling edges rather than specialty joinery, which streamlines setup for straightforward trim or panel work. The corner-rounding bit rounds an edge to a given radius and cuts a fillet, creating a smooth curved edge with a small flat detail that helps visually break the corner. That same cut can be used to ease sharp edges on parts, to serve as a simple decorative profile, or as one element in a more complex multi-bit profile, keeping one tool useful across several trim details on the same job. Also known as round over, rounding over, and quarter-round, this profile terminology helps match drawings and shop notes to an actual cutting tool.
This corner-rounding bit has a 1/2 inch shank, so it fits routers sized for 1/2 inch shank tools, supporting a more substantial tool interface for demanding edge-forming passes. The cutting diameter is described as 2-7/8 x 3/4 Radius, which defines the relationship between overall bit size and the 3/4 inch radius profile, helping tradespeople match the cutter to prints that call out that specific radius. A ball bearing guide on the bit controls how the profile tracks along the edge, letting the cutting radius follow the edge of the workpiece without additional fences, which simplifies working on curved or straight parts. The 2-flute design means there are two cutting edges sharing the work, balancing cut smoothness with forward feed so edges come off the router with a clean profile ready for sanding and finishing workflows.
This corner-rounding bit functions as a basic edge-forming bit, so it slots naturally into cabinet, furniture, and millwork workflows where rounded, finished edges are standard. With a 3/4 inch radius, it generates a pronounced round over that suits thicker stock or design details that call for a softer, heavier edge instead of a small break, helping match design intent on mantels, tops, or frames. Because the cut can be used to ease edges, installers can move from sharp, machined edges to comfortable touch-points on doors, panels, and trim in a single pass, which is valuable on high-contact components. When used as a simple profile, the radius and fillet provide a clean, understated detail that reads well under stain or paint without looking overbuilt. When the same profile is used as part of a complex one, it can combine with other edge-forming steps to create layered moldings or custom trim, letting shops reuse a familiar tool in multiple assemblies.
The Amana Tool 2-7/8 x 3/4 Radius Corner Rounding Bit with Ball Bearing Guide, 2-Flute, 1/2 Shank is designed so each identified feature contributes directly to workflow. The ball bearing guide keeps the cutting radius aligned to the workpiece edge, which reduces wandering and supports consistent reveal lines on long runs. The 2-flute construction shares the cutting load between two edges, which promotes smooth cuts that reduce tear-out and limit sanding time after routing. Because this bit is also known as round over, rounding over, and quarter-round, the multiple names match typical specification language, simplifying tool selection when reading plans or communicating in the shop. If a smaller pilot bearing is used, a second shoulder can be produced, in effect making the bit a beading bit, which lets shops add a bead detail without investing in a separate dedicated beading cutter. This flexibility keeps one 49520 corner rounding bit productive across edge easing, simple rounding, and bead-style profiles.
The Amana Tool corner-rounding bit rounds an edge to a given 3/4 inch radius and cuts a fillet, creating a smooth curved edge with a small flat shoulder for a defined, repeatable profile.
The bit uses a ball bearing guide, so the bearing rides the workpiece edge while the cutters shape the 3/4 inch radius, supporting consistent tracking on straight or curved edges.
This corner-rounding bit has a 1/2 inch shank, which matches routers equipped for 1/2 inch shank tooling and supports a solid connection between the bit and the router collet.
This bit can produce a second shoulder when a smaller pilot bearing is used, in effect making it a beading bit and allowing a bead detail from the same cutter body.
The 2-7/8 x 3/4 Radius Corner Rounding Bit is a 2-flute design, so two cutting edges share the cut, supporting smooth edge-forming passes suitable for finishing.
This profile is also known as round over, rounding over, and quarter-round, which matches common trade terms and helps align the cutter with drawings calling for those profiles.
The Amana Tool 2-7/8 x 3/4 Radius Corner Rounding Bit with Ball Bearing Guide, 2-Flute, 1/2 Shank is a focused edge-forming router bit for projects that specify a 3/4 inch radius round over with a fillet. As a basic edge-forming bit that can ease edges, act as a simple profile, or serve as part of a complex one, it fits well into a cabinet, furniture, or millwork workflow centered on clean, repeatable profiles. When a smaller pilot bearing is used, the same 49520 corner rounding bit can act as a beading bit, adding flexibility when design details call for a bead.
Sold In: 1 Each
Quantity | Unit Price | Catalog | ||||
|---|---|---|---|---|---|---|
Sold in: 1 Each |  AA47706 Mfr# 47706 | 3/16" x 1/2" Steel Ball Bearing Guide |
