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
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
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Specifications
Questions & Answers
54Questions
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
Q:what is the max hole depth of the 2" bit ?
by|Nov 4, 2022
1 Answer
Answer This Question
A:Â 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
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:Â 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
Q:Will it drill through fiberglass (bathtub)
by|Jun 16, 2022
2 Answers
Answer This Question
A:Â Sure will,if it cuts hard wood it should have no problem thru fiberglass.
by|Jun 21, 2022
A:Â 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
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
Jan 5, 2022
Cuts holes cleanly. Would buy again....
Cuts holes cleanly. Would buy again.
by
1 found this review helpful
Mar 18, 2021
Easy to use, accurate. Exactly what I needed.
Easy to use, accurate. Exactly what I needed.
by
Verified Purchase
Recommended
Jan 30, 2021
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
Nov 13, 2020
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
Jun 24, 2020
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
Jun 16, 2020
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
Jun 10, 2020
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
Jun 9, 2020
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
May 12, 2020
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
May 1, 2020
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