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1 in. High-Speed Steel Forstner Bit

$1197
  • For drilling straight, angled and overlapping holes in wood
  • Best application on hand-held drill or drill press
  • Hardened steel body for longer life and sharper cutting edge
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Product Details

The Diablo 1 in. High-Speed Steel Forstner Bit drills straight, angled and overlapping holes in all types of wood without splintering. It features a double-ground serrated edge for less splintering and chipping.
  • Minimum chuck size of 3/8 in.
  • Drills straight, angled and overlapping holes in all types of wood
  • Forged construction of the hardened steel body warrants a long bit life and a sharper cutting edge
  • Ultra-sharp center spur ensures an accurate hole without walking on material
  • Steep, angled cutting edges produce smooth, flat holes and create chisel-like curls for fast, clean chip removal
  • Return Policy

Additional Resources

From the Manufacturer

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Specifications

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Questions & Answers

54Questions
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Q:Can I use this to make a hole in a curved fence post?
by|Dec 22, 2022
1 Answer
Answer This Question

A:  Yes. Drill a small pilot hole first, drill slowly and keep the bit straight and the drill perpendicular to the post. It will grab a bit when the outer edges start cutting so pay close attention. They’re not very long bits and they create shavings as well as saw dust so if you’re drilling a deep hole pull it out and blow out the waste from the hole and off of the bit. They’re really meant to be used in a drill press but go slowly and pay attention and you should be fine.

by|Dec 23, 2022
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    Q:what is the max hole depth of the 2" bit ?
    by|Nov 4, 2022
    1 Answer
    Answer This Question

    A:  Hi Joe! Thank you so much for the inquiry. The full length of the bit is 3.5". Thus, depending on how the bit is held in the tool, the max hole depth would roughly be 2-1/4". If you have any further questions, please call 800-334-4107 or email customerservice@diablotools.com. We're here to help!

    by|Jan 12, 2023
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      Q:A question was asked on Nov. 21, 2021, about a 1" forestner bit as to what was the actual diameter of the hole this bit made? A Diablo product expert answered that it made a diameter of 2". Can you explain that?
      by|Aug 19, 2022
      1 Answer
      Answer This Question

      A:  Forsnter bit set includes the following bits: 1/4 in., 1/2 in., 3/4 in, and 1 in. Those are the sizes of the holes made by the bits.

      by|Oct 26, 2022
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        Q:Will it drill through fiberglass (bathtub)
        by|Jun 16, 2022
        2 Answers
        Answer This Question

        A:  Sure will,if it cuts hard wood it should have no problem thru fiberglass.

        by|Jun 21, 2022

          A:  I have no idea. I used it to drill through the bottom of a wood wine barrel. I would be concerned about the fiberglass splintering. Also, the bit might have trouble cutting a smooth fiberglass surface. I would check with manufacturer before trying this.

          by|Jun 17, 2022
            Showing 1-4 of 54
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            Customer Reviews

            4.7 out of 5
            (1,202)
            • 4.7
              out of 1,202 reviews
            • 95%recommend this product
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            Showing 1-10 of 1,202 reviews
            Cuts holes cleanly. Would buy again....
            Cuts holes cleanly. Would buy again.
            by
              1 found this review helpful
              Easy to use, accurate. Exactly what I needed.
              Easy to use, accurate. Exactly what I needed.
              by
              • Verified Purchase
              • Recommended
              Absolute Powerhouse! These bits by Diablo last me at least...
              Absolute Powerhouse! These bits by Diablo last me at least a year of heavy hole drilling and even after a year they are still plenty sharp! I used this bit in particular to drill holes for a pegboard training wall to go with our rock wall and the holes were so clean and smooth I didn't have to sand or touch up anything at all! Make sure the drill you are using is a work horse because this bit will whip your drill into shape. It also fits in a 3/8" chuck if you are wondering.
              by
              • Verified Purchase
              1 found this review helpful
              I was really impressed with how clean of a cut this forstner bit provided, but it has to be used ...
              I was really impressed with how clean of a cut this forstner bit provided, but it has to be used on a high-speed drill. This bit is about as sharp as a knife and is meant for cutting very clean holes/depressions in a finished piece, such holes a spade bit cannot reliably do. My first project with the bit was cutting depressions to fit dowels for a children's play ladder. The bit drilled quickly but allowed for good depth control. It cleaned saw dust and cuttings out very well. The center spur is a great feature for accurate holes as well. Ideally, you want to use this bit on a drill press but I was able to level it well on my hand drill. I used my DeWalt XR at it's fastest mode (2,000 RPM) and the holes were near flawless. I experimented at a slower speed on scrap wood and the hole splintered. This bit fits a 3/8" chuck and is made in Austria, so you know it is quality. The bit also needs to remain sharp so store it well.
              by
              • DIY
              • Recommended
              2 found this review helpful
              Best $16 I've spent
              I needed to relocate a European hinge on a cabinet as it interfered with the sink. I used a drill stand and this bit cut the perfect hole in the cabinet door. No rough edges, clean as a whistle, worked like a charm. Job done!
              by
                • Recommended
                Put 3 holes in 168 pieces and still leaves a clean edge hole.
                Put 3 holes in 168 pieces and still leaves a clean edge hole.
                by
                • Verified Purchase
                • Recommended
                2 found this review helpful
                Drill bit performed great. I needed to recess a place for a dowels. Bit was very sharp and made t...
                Drill bit performed great. I needed to recess a place for a dowels. Bit was very sharp and made the cut effortlessly.
                by
                • Verified Purchase
                • Recommended
                1 found this review helpful
                Makes holes that perfectly Fit 35mm euro door hinges-...
                Makes holes that perfectly Fit 35mm euro door hinges-
                by
                • Verified Purchase
                1 found this review helpful
                Awesome bit! Cuts perfectly with clean edges. The sound it made in mahogany was beautiful. I love...
                Awesome bit! Cuts perfectly with clean edges. The sound it made in mahogany was beautiful. I love this bit.
                by
                • Verified Purchase
                • Recommended
                3 found this review helpful
                Never this particular bit because I was putting metal ballisters on my deck and this thing worked...
                Never this particular bit because I was putting metal ballisters on my deck and this thing worked like a dream,,would definitely recommend it and if I need any bigger sizes for next project I’m definitely getting them
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                • Recommended
                Showing 1-10 of 1,202 reviews

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