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    Vernon Hills, IL
    Vernon Hills, IL
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    Forstner Bits
    1. Home
    2. Bits, Blades and Cutters
    3. Forstner Bits
    Item # AAFO-540 • Mfr # FO-540

    2-1/8" x 3-1/2" Forstner Pattern Bit, 3/8" Shank

    Description

    2-1/8 Forstner Pattern Bit For Clean Wood Holes

    2-1/8 x 3-1/2 Forstner pattern bit gives you a dedicated bit for drilling 2-1/8 inch diameter holes in wood, so you can handle pocket-holes and flat-bottom holes where a precise size matters for your layout or hardware fit. This Amana Tool Forstner bit has a 3/8 inch shank, which lets you run it in any 3/8 inch or larger portable drill or stationary drill press, so one bit can serve both shop and jobsite setups. The Forstner pattern design is known for drilling clean and chip-free holes in wood, which reduces blowout around the edge of the hole and leaves a neater surface for plugs or fittings. Amana Tool uses high quality tool steel that is precision machined and ground, so the cutting geometry is consistent and helps the bit track accurately in repetitive drilling. Large gullets are milled into the tool body to clear chips efficiently, keeping the cutting edges engaged instead of clogged.

    Key Forstner Bit Details For Woodworking Jobs

    • The 2-1/8 inch diameter size sets this Forstner pattern bit up for holes that must match that dimension, which is important when you need repeatable 2-1/8 inch cuts across multiple workpieces.
    • The 3-1/2 inch overall design gives you working length for deeper 2-1/8 inch holes, which helps when drilling into thicker stock where pocket-holes or flat-bottom holes extend farther into the material.
    • The 3/8 inch shank fits any 3/8 inch or larger portable drill or stationary drill press, which lets you move between handheld and drill press work while using the same FO-540 Forstner bit.
    • The Forstner pattern cutting geometry is well known for drilling clean, chip-free holes in wood, which matters when exposed hole edges or tight-fitting parts demand a smooth, accurate cut.
    • Large gullets milled in the tool body provide exceptional chip clearance, which keeps chips moving out of the hole so the cutting edges stay engaged and heat buildup is reduced.

    Drilling Setup, Flat Bottom Holes, And Centering

    This Amana Tool Forstner bit is designed to drill pocket-holes and flat-bottom holes using any 3/8 inch or larger portable drill or stationary drill press, so it adapts to common shop equipment without special tooling. The Forstner pattern design produces flat-bottom holes in wood, and a small pilot hole used for centering will be present on those flat-bottom holes, which gives you a positive center reference while leaving only a minor point at the bottom that is easy to account for in your layout. Using a portable drill lets you take the 2-1/8 inch diameter directly to assembled work in the field, while a drill press offers more control for repetitive drilling in shop runs.

    Using The FO-540 Forstner Bit In Wood Projects

    Where This Amana Tool Forstner Bit Excels

    The FO-540 Forstner bit is intended for woodworking applications where 2-1/8 inch diameter holes are required, so it suits tasks like pocket-holes or flat-bottom recesses that must stay within that size. Because the bit drills clean and chip-free holes in wood, it works well when the edge of the hole remains visible or supports a part that benefits from a smooth bearing surface. The ability to operate in any 3/8 inch or larger portable drill means you can bring the 2-1/8 inch cutting capacity to larger assemblies, doors, or casework that cannot be moved easily to a drill press. When mounted in a stationary drill press, the same Forstner pattern geometry helps maintain consistent hole placement across production runs where accuracy between parts is important.

    Details That Support Repeatable, Accurate Drilling

    Amana Tool uses the finest quality tool steel that is precision machined and ground, which produces cutting edges and a bit body that are uniform, supporting accurate tracking as you repeat the same hole pattern. The Forstner pattern cutting approach is known for delivering clean, chip-free holes in wood, and that reliable cut quality helps reduce sanding or clean-up time around each 2-1/8 inch opening. Large gullets milled into the tool body provide exceptional chip clearance, allowing chips to move away from the cutting edges so the bit can continue to cut efficiently through deeper material. The small pilot hole used for centering on flat-bottom holes adds a built-in reference point during drilling, which keeps the bit located where you want it in your layout while leaving only a minor mark at the base of the hole.

    Common Questions About The FO-540 Forstner Bit

    What size hole does the FO-540 Forstner bit drill?

    The FO-540 Forstner bit drills a 2-1/8 inch diameter hole, which is useful when your work requires that specific size across multiple parts.

    Which drills can run this 3/8 shank Forstner bit?

    This Amana Tool Forstner bit works in any 3/8 inch or larger portable drill or stationary drill press, so it handles both mobile and fixed drilling setups.

    Can this Forstner bit drill flat bottom holes in wood?

    This Forstner pattern bit drills flat-bottom holes in wood, and a small pilot hole used for centering will be present at the bottom of those holes.

    How clean are the holes drilled by this Forstner bit?

    The FO-540 Forstner bit is well known for drilling clean, chip-free holes in wood, which leaves neater edges around each 2-1/8 inch opening.

    What material is used to manufacture this Forstner bit?

    Amana Tool uses the finest quality tool steel, precision machined and ground, which supports consistent cutting performance in woodworking applications.

    How do the large gullets on this bit help during drilling?

    Large gullets milled in the tool body provide exceptional chip clearance, so chips move out of the hole and the cutting edges keep working efficiently.

    Select This 2-1/8 Inch Forstner Bit For Wood

    The Amana Tool 2-1/8 x 3-1/2 Forstner pattern bit with 3/8 inch shank gives you a dedicated FO-540 solution for drilling clean, chip-free 2-1/8 inch holes in wood using portable drills or a stationary drill press. When a job calls for precise 2-1/8 inch pocket-holes or flat-bottom holes and dependable chip clearance, this Forstner bit from Wurth Baer Supply aligns the required diameter, shank size, and cutting geometry into one tool ready for regular shop or field use.

    Shank Diameter (in)
    3/8 in
    Diameter (in)
    2-1/8 in
    Shank Style
    Straight
    Overall Length (in)
    3-1/2 in
    Product Type
    Forstner Bit
    Supplier Pack Size
    1
    Sold In
    1
    Shank Diameter (in)
    3/8 in
    Diameter (in)
    2-1/8 in
    Shank Style
    Straight
    Overall Length (in)
    3-1/2 in
    Product Type
    Forstner Bit
    Supplier Pack Size
    1
    Sold In
    1
    0Cart
    0Cart
    3/8 in1/2 in
    2-1/8 in2-1/4 in
    3-1/2 in6 in
    Amana Tool
    $225.62/Each
    2-1/8" x 3-1/2" Forstner Pattern Bit, 3/8" Shank
    Item# AAFO-540 / MFR Part # FO-540
    Each
    Each

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    Sold In: 1 Each

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