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2-25/32 x 1/2 Radius Corner Rounding Bit describes an Amana Tool router bit built for solid surface countertop work, so installers can shape sink edges with consistent geometry. The bit combines a 2-25/32 inch overall length with a 1/2 inch shank, giving solid support in 1/2 inch collet routers during undermount profiling. A 33/64 inch radius cutting edge forms a controlled round-over on solid surface, which helps produce a comfortable, uniform transition at the sink opening. The bit diameter of 2-9/64 inch and 63/64 inch cutting height work together to remove material efficiently around sink cutouts, which matters when trimming full-depth tops. As a router bit in the solid surface category, it fits directly into workflows for fabricating Gemstone, Livingstone, Du br Pont, Wilsonart, and Formica sink and vanity installations listed by the manufacturer.
The 10 degree angle on this corner rounding bit sets the cutting draft, so the bit shapes the reveal to match the intended undermount profile. That matters when trimming and profiling countertop edges after the bowl is mounted, because the angle needs to follow the sink wall. The 63/64 inch cutting height controls how much vertical edge can be cut in one pass, which helps match the full height of many solid surface sink reveals. With the 25/32 inch B1 measurement working with the main cutting height, installers can engage enough flute length to complete the profile at the sink perimeter while maintaining bearing contact.
This Amana Tool router bit is designed specifically for undermount installations of multiple Gemstone vanity models, including 1514-VO, 1812-VO, 1613-VSO, 1814-VO, 1814-EVO, 1313-VO, 1513-VO, and 1711-VO. That targeted design continues with Gemstone bar and kitchen sink models such as 1014-S, 1016-S, 1318-S, 1411-S, 1507-S, 1515-S, 1815-S, 1524-S, 1517-S, 1616-S, N1616-S, 1616-ES, 2116-US, 2015-S, 2318-S, 2416-ES, 2615-S, 2716-US, 2718-S, 2818-S, 2033-S, 2916-UD, 1729-D, 2917-D, 1930-DL, 1630-D, 3016-D, 3118-D, and 3218-D. It is also specified for Livingstone vanity model K-140G and kitchen sink models K130-G, K140G, and K160G, aligning the bit geometry with those bowl profiles. The bit is listed for Du br Pont kitchen vanity models 810P, 8252, 8254, and 850P, as well as Du br Pont kitchen sink model 850-P, tying its draft and radius to these units. Wilsonart vanity models BV1514, BV1812, BV1313, and BV1711, plus Wilsonart kitchen sink models BK2015, BK1515, BD1630, BD3016, and BK2716US, are also named applications, connecting this router bit directly to those fabricator programs. Formica vanity model L080 and Formica kitchen sink models K080A and K250A are further specified uses, so shops working with these tops can match the sink reveal to manufacturer expectations.
The 10 degree cutting draft with a matching bearing enables the cutter to do more work, which reduces hand-finishing time along the sink reveal. By trimming and profiling the countertop edges after the bowl is mounted, the bit aligns the finished edge to the actual bowl position, which supports a tight, even joint. The 33/64 inch radius produces a consistent round-over that transitions from deck to bowl, which matters for both appearance and a uniform reveal on the listed Gemstone, Livingstone, Du br Pont, Wilsonart, and Formica models. The 2-9/64 inch diameter and 63/64 inch cutting height let the bit engage enough surface area to profile full-depth solid surface sinks in one controlled path, which can improve throughput on repetitive sink cutouts. With a 2-25/32 inch overall length and 25/32 inch B1 dimension, the geometry balances reach and rigidity, which helps the bit track the bearing smoothly without excessive flex.
The Amana Tool 57267 bit uses a 1/2 inch shank, which fits routers with a 1/2 inch collet and supports stability when running the 2-9/64 inch diameter cutter.
The 10 degree cutting draft with a matching bearing shapes the sink reveal at the intended angle, which keeps the edge profile consistent around the mounted bowl.
This router bit is designed for undermount installations of specified Gemstone, Livingstone, Du br Pont, Wilsonart, and Formica vanity and kitchen sink models listed by the manufacturer.
The bit cuts a 33/64 inch radius, creating a controlled round-over on solid surface edges that matches the intended reveal on the named sink models.
The ball bearing guide matches the 10 degree draft, so the cutter follows the sink or template edge and maintains angle and position throughout the cut.
The cutting height is 63/64 inch, which allows the bit to shape nearly a full inch of vertical sink reveal in a single guided pass.
The Amana Tool 2-25/32 x 1/2 Radius Corner Rounding Bit with ball bearing guide is built around a 10 degree draft and 33/64 inch radius that match listed Gemstone, Livingstone, Du br Pont, Wilsonart, and Formica undermount models. For shops fabricating these solid surface vanities and sinks, this geometry supports trimming and profiling the countertop edges after the bowl is mounted so the finished reveal tracks the actual sink wall. When a 1/2 inch shank, guided 2-flute router bit with a defined radius and angle fits your listed installations, this model aligns directly with that work.