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Product Price Qty
5/8'' D x 1/2'' H x 5/16'' R x 1/2'' Shank Rockler Core Box Bit
5/8'' D x 1/2'' H x 5/16'' R x 1/2'' Shank Rockler Core Box Bit Item #90990
In stock
$29.99 Each
1-1/2'' D x 1-1/4'' H x 3/4'' R x 1/2'' Shank Rockler Core Box Bit
1-1/2'' D x 1-1/4'' H x 3/4'' R x 1/2'' Shank Rockler Core Box Bit Item #69978
In stock
$46.99 Each
7/8'' D x 3/4'' H x 7/16'' R x 1/2'' Shank Rockler Core Box Bit
7/8'' D x 3/4'' H x 7/16'' R x 1/2'' Shank Rockler Core Box Bit Item #91057
In stock
$42.99 Each
1'' D x 3/4'' H x 1/2'' R x 1/2'' Shank Rockler Core Box Bit
1'' D x 3/4'' H x 1/2'' R x 1/2'' Shank Rockler Core Box Bit Item #23822
In stock
$44.99 Each
1-1/2'' D x 7/8'' H x 3/4'' R x 1/2'' Shank Rockler Core Box Bit
1-1/2'' D x 7/8'' H x 3/4'' R x 1/2'' Shank Rockler Core Box Bit Item #23848
In stock
$54.99 Each
3/4'' D x 5/8'' H x 3/8'' R x 1/2'' Shank Rockler Core Box Bit
3/4'' D x 5/8'' H x 3/8'' R x 1/2'' Shank Rockler Core Box Bit Item #91001
In stock
$34.99 Each
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Rockler Core Box Router Bits - 1/2" Shank

This classic fluting cutter cuts a round-bottom groove—ideal for decorative columns, finger pulls, sill drip rails and more.
Item #
GRP2121_2
Rating:
96% of 100
(37)
Our Core Box Bits are available in several angles to cut rounded grooves and slots of varying widths that can be both decorative and functional. Sometimes called round nose bits, they are commonly used for sign-making, and are also ideal for fluted columns, finger pulls, drain grooves on cutting boards, drip rails for window sills and more. Two flutes. Sturdy, vibration-free 1/2" shanks.

(1) Rockler Core Box Router Bit, 1/2" Shank
More Information
Weight 0.4500
Bit Type Round Nose
Shank Size 1/2"
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4.8 / 5.0
37 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
31
5
0
1
0
Hoorah!
This bit is absolutely perfect for cutting the groove in cedar for construction of Native American flutes.
July 4, 2020
Purchased
 over 4 years ago
Woodworking Experience:
Intermediate
signs
Great to use with Rockler sign making kits
December 20, 2019
Purchased
 1 year ago
Woodworking Experience:
Advanced
Quality bit
May 29, 2019
Purchased
 1 year ago
Woodworking Experience:
Intermediate
Great value for price!
May 11, 2019
Purchased
 1 year ago
Great quality
February 25, 2018
Purchased
 over 2 years ago
Woodworking Experience:
Intermediate
Core box router bit
This cutter performed perfectly, as I expected. I do not have a plunge router, but it worked great by tipping the router into cherry wood while running. It did not pull to the side since it was sharp enough to cut the wood easily.
January 28, 2018
Purchased
 over 2 years ago
Woodworking Experience:
Intermediate
Rockler Router Bit
Used bit for making handle grooves in cutting boards,,,Bit worked perfectly !!!
December 27, 2017
Purchased
 over 2 years ago
Woodworking Experience:
Advanced
Worked well
Needed to try and match an old door that looked to have used a shaper to cut the edging. Since I do not have a shaper I matched this bit to the same curve. After a few tests I tried it on the door and it worked great.

They has so many parts that you can' t find anywhere else.
November 8, 2017
Purchased
 over 2 years ago
Woodworking Experience:
Intermediate
It'll get the job done
I haven't used it quite yet, but it will work just fine I'm sure in creating the bore for my next flutes which will have a 1.5" bore.
August 4, 2017
Purchased
 over 2 years ago
Woodworking Experience:
Intermediate
As Expected
Used this for an artsy little box project and it performed perfectly in red oak and cherry.
June 16, 2017
Purchased
 over 3 years ago
Woodworking Experience:
Advanced
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Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 4 questions Browse 4 questions and 6 answers
Why did you choose this?
Rockler Store
should work well on my shaper to make finger pulls on drawer fronts
Jesse C on Aug 8, 2018
For a wood working project. Build fluted pillars.
Roger S on Jul 10, 2018
should work well on my shaper to make finger pulls on drawer fronts
Jesse C on Aug 8, 2018
need for flute jig i just bought
George on Aug 5, 2018
For a wood working project. Build fluted pillars.
Roger S on Jul 10, 2018
To go with my Rockler Logman Tenon Maker... It has done me a great job. Thank You Russell G. Brinks
Russell G. B on Jun 15, 2018
Doing elegant edge trim on bookcase
Cynthia F on May 28, 2018
needed for project
Gregory C on May 25, 2018
In an attempt to make drawer pulls.
David R on Apr 26, 2018
Needed for Woodsmith dresser-top valet construction
Michael L on Apr 6, 2018
the quality of router bits sold by rockler are of a high quality
ken b on Apr 3, 2018
For flute making
David W on Mar 13, 2018
Trial spoon cutter
John C on Jan 6, 2018
for making handle grips on cutting boards
donald w on Nov 25, 2017
For a woodworking project that I'm working on.
Norman B on Nov 24, 2017
Needed a 7/8 diam round-nose bit.
Bernard W on Nov 12, 2017
One of first projects will be making a fixture to mill flats on round material.
Michael M on Sep 4, 2017
To build things
Jarom G on Aug 21, 2017
Needed to cut a 7/8" grove and cold not find a bit at any local store
Richard F on Jul 22, 2017
I'll be making some large bore flutes using this.
MARK A M on Jul 14, 2017
I need it for a project
Larbear on Jun 6, 2017
Need it for a project. Price was competitive and good experience with brand
Michael L P on May 26, 2017
To make a shallow dish out area on the top of a whiteboard marker holder shelf
Colin C on May 22, 2017
I ordered this because of price. Need the bit for a particular job, and probably a one time job. Should be fine
Dick C on May 7, 2017
For a project
Ken B on Apr 11, 2017
To make replacement siding boards which match profile of current boards.
Myron K on Mar 17, 2017
I turned a pen that's too big (3/4" dia) to fit in the pen boxes available in the store. So I am making one to accommodate it.
Vince B on Jan 24, 2017
To add to my collection of bits.
Jim L on Jan 24, 2017
I have a specific job for it.
Leslie A on Dec 4, 2016
Want to use this bit when making cutting boards.
Joseph B on Nov 28, 2016
Marble maze for my son.<br />Seems like fun although, I'm not sure if he will like it as much as me. No touch screens or blinky lights - the boy might get board quickly...
Floyd S on Nov 27, 2016
Needed for custom part on pool deck Roman Shade Pergola
Ronald T on Nov 26, 2016
I make custom Native American Flutes
Bruce M on Oct 27, 2016
best price for quality I could find on the net ; 1/2" shank (less vibration ) ; others had 1/4" shank
Terry S on Aug 12, 2016
Large bit cuts CNC time.
Paul K on Aug 2, 2016
right size for the slots I need
Douglas Y on Jul 15, 2016
plans called for it
Mike S on May 28, 2016
to put a finger slot on an indoor railing - safety
Deanna T on Jan 29, 2016
Project needs.
Daniel V on Dec 30, 2015
Size
alan s on Dec 14, 2015
Used bit to help make poker table coin tray.
Ricky B on Nov 15, 2015
To make recessed cuts to fit drumsticks inside the handle of a box drum
thomas c on Oct 30, 2015
Woodcarver
Robert V on Oct 23, 2015
Quality of your router bits
Paul on Aug 14, 2015
I cannot find the bullnose baseboard corners that I want for under $7.00 a piece. I am hoping this router bit will enable me to build my own bullnose baseboard corners for much less. I need around 42 of the pieces to complete the baseboard trim in my house.
Jay M on Jul 21, 2015
SPECIAL PROJECT
kirkland t on Jun 29, 2015
We use these bits to router drain gutters in the lids of couches in sportsfishing boats
Ron C on Jun 9, 2015
In the making of handrails for ramps. It's price is competitive.
David W on May 30, 2015
Needed this size not available at lowes
Walter K on May 26, 2015
Needed this bit to complete project
David F on May 21, 2015
It was on sale and you never know when you need a router bit like this.
JC S on May 20, 2015
it's what i needed
Leroy S on May 15, 2015
need for flute jig i just bought
George on Aug 5, 2018
To go with my Rockler Logman Tenon Maker... It has done me a great job. Thank You Russell G. Brinks
Russell G. B on Jun 15, 2018
Do you have a router the size of a golf ball, 1.68 inches?
Jim Kork on Jun 9, 2016
We need to cut finger pulls in a couple of butcher block cutting boards. I'm pretty sure the 1/2" bit will be fine for size. My question is the gradual beginning and ending of the cut -- will this bit do that as well, or are we looking at another piece of equipment in addition?
mezzodiva54 on Jun 23, 2017
BEST ANSWER: Side or edge cuts are completely irrelavent. Tapered ends can be accomplished with wedges at ends of groove. Let router ride up the wedges untul clear of cutting board surface. Might need to practice to achieve accuracy.
I understand that everything is based on individual need, but I need to route finger pulls into under counter slide out cutting boards. Typically which size bit would be best for this, and typically how far in from the edge should the groove be? Thanks.
chuck on Aug 5, 2016
BEST ANSWER: Don't know if this helps for the full extent to the question but I made some neat finger pulls for hex boxes I'm making combining first the Rockler 1" round bit and finishing an overcut with the 1" dovetail ( both 1/2" shank )
less than 1/4" over the round to give it a nice edge ; works nice for a vertical hand grip on a cedar box with 1/2" or so would where the cut depth is limited, but maybe not for your application .
Will these bits fit/ work in a plunge router?
A shopper on Jul 31, 2015
BEST ANSWER: Yes, as long as the router has a 1/2" collet.
Prop 65 WarningWARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov

Prop 65 WarningWARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov/wood.
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