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Cuts slots and grooves of varying widths—ideal for frame and panel doors and other joinery applications.
Grouped product items
Product Name Price Qty
1-7/8" D x 3/32" H x 1/4" Shank Rockler 3 Wing Slotting Cutters Bit
1-7/8" D x 3/32" H x 1/4" Shank Rockler 3 Wing Slotting Cutters Bit Item #: 91100
In stock
$39.99
Each
1-7/8" D x 1/8" H x 1/4" Shank Rockler 3 Wing Slotting Cutters Bit
1-7/8" D x 1/8" H x 1/4" Shank Rockler 3 Wing Slotting Cutters Bit Item #: 92167
In stock
$39.99
Each
1-7/8" D x 5/32" H x 1/4" Shank Rockler 3 Wing Slotting Cutters Bit
1-7/8" D x 5/32" H x 1/4" Shank Rockler 3 Wing Slotting Cutters Bit Item #: 92178
In stock
$41.99
Each
1-7/8" D x 3/16" H x 1/4" Shank Rockler 3 Wing Slotting Cutters Bit
1-7/8" D x 3/16" H x 1/4" Shank Rockler 3 Wing Slotting Cutters Bit Item #: 92189
In stock
$42.99
Each
1-7/8" D x 1/4" H x 1/4" Shank Rockler 3 Wing Slotting Cutters Bit
1-7/8" D x 1/4" H x 1/4" Shank Rockler 3 Wing Slotting Cutters Bit Item #: 92200
In stock
$44.99
Each
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Rockler 3 Wing Slotting Cutters Router Bits - 1/4" Shank

Item #
GRP2119_1
Rating:
98% of 100
30  Reviews
These slot cutters feature a 22mm bearing set to cut 1/2" deep into the edge of your material. With the slot width of your choice, you can create slots and grooves for frame and panel doors, picture frames, glass retainer and more. The 3-wing design provides a smooth cut and a longer cutting life. Top quality bits that meet the high demands of Rockler Woodworking and Hardware.

(1) Rockler 3-Wing Slotting Cutter Router Bit, 1/4" Shank
More Information
Weight 0.1900
Diameter 1-7/8"
Shank Size 1/4"
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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4.9 / 5.0
30 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
28
1
1
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0
The tool was perfect for the job !
The too was perfect for the job!
April 6, 2019
Purchased
 6 months ago
Woodworking Experience:
Intermediate
The 3 wing slot cutter works great. Had to cut at slot on the bottom of a "barn door" for a concealed door guide.
June 15, 2018
Purchased
 1 year ago
Hardwood flooring
Works well putting grooves in hardwood floors...
April 21, 2018
Purchased
 1 year ago
Woodworking Experience:
Beginner
I am making laminated wood trout landing nets and needed good quality bits that don't dull quickly this bit has worked flawlessly.
April 15, 2018
Purchased
 1 year ago
Woodworking Experience:
Advanced
Brilliant for its intended use
This was exactly what I needed to slot the bottom of a sliding door, in an instance where I didn't want the slot visible from the edges of the door. The product is high-quality and razor sharp. It made the job easy. I hope I find further use for this bit.
January 24, 2018
Purchased
 1 year ago
Woodworking Experience:
Advanced
Worked great
I bought this to cut a bottom guide slot in a pocket door. Worked like a charm
October 7, 2017
Purchased
 over 2 years ago
Woodworking Experience:
Beginner
Great tool
Did just what I needed, put a slot in trex decking..
May 30, 2017
Purchased
 over 2 years ago
Woodworking Experience:
Advanced
Worked Great
No flex when cutting dados in 1/2" panel. I expect the cutter to last longtime, but when it dulls I'll order another.
November 28, 2016
Purchased
 over 2 years ago
Woodworking Experience:
Intermediate
great
Used this bit to join two pieces of fiber board and it worked great
September 4, 2016
Purchased
 over 3 years ago
Nice smooth cut every time! Very pleased
May 11, 2016
Purchased
 over 4 years ago
Woodworking Experience:
Beginner
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Browse 10 questions Browse 10 questions and 11 answers
Why did you choose this?
Rockler Store
I need to cut half inch slots in a project and using the table saw was not practical.
Steven on May 28, 2018
This is for my husband. He needs it for a project he is working on. Thank you!
Margaret R on Mar 10, 2018
I need to cut half inch slots in a project and using the table saw was not practical.
Steven on May 28, 2018
for my table top fasteners
No Sparks on Apr 21, 2018
This is for my husband. He needs it for a project he is working on. Thank you!
Margaret R on Mar 10, 2018
I have devised a new way to join corners for large picture frames that requires slots. This bit will provide the slots.
KEITH M on Feb 25, 2018
need to make a cabinet doors
Ron G on Dec 14, 2017
Allows me to build a frame using kreg jig and then routing groove for panel. Saves time and a lot easier than tongue and groove joinery for the rails and stiles.
Larry B on Nov 26, 2017
job requirement - large table top spline slots
GARY M W on Nov 4, 2017
Cabinet Making
Richard M on Aug 10, 2017
Have purchased from Rockler before and have always been satisfied with the product and service.
William E. S on May 29, 2017
I need an accurate 1/4" slot 1/2" deep in the end of my plywood drawer front. Setting up a stacked dado head cutter is too time consuming, so I opted for this method.
James P on May 19, 2017
Need for a barn door project
LUKE L on Mar 15, 2017
New to woodworking and building my router bit collection.
Charles T on Jan 3, 2017
handy accessory for my Bosch palm router
Clint K on Nov 28, 2016
It was the exact size I need to produce a groove for a new product design
Brian J on Nov 11, 2016
Easy to use
Clarence G on Aug 23, 2016
I am making a cabinet that will us dado and tenon joinery and this is the easiest way to cut the dado.
Sandra M on Aug 8, 2016
a project I am working on used this bit in the instructions
Mary R on Jun 27, 2016
Cutting the drawer bottom slot after dove-tailing and assembly should prove to be a beautiful easy job with this bit.
Grizzlybare on Apr 20, 2016
Needed for cutting biscuit joints on the router for cutting boards.
Ronald K on Apr 1, 2016
I need to cut 1/4" slots. Also, I had clicked on a section that said shipping would be free for orders over $35, but I couldn't see where that was applied -- got frustrated -- gave up.
George J on Jan 14, 2016
To cut a slot on the inside edges of a wooden air-conditioner mount to accept the pullout baffle flanges.
Hobart E on Jan 3, 2016
needed to make a slot for a hardboard spline - for a computer desktop.
Charles H on Dec 27, 2015
I needed it
Jess R on Nov 16, 2015
Wish I hadn't! It's not as easy to use with a handheld router, and my table doesn't properly accommodate it. I need a bigger bearing so I can use a hand router, but there are none available. It's just going to sit in the drawer now.
Jack on Oct 16, 2015
Why use a biscuit cutter when you can use a high quality router bit to do the same job, just better and faster. Then make your own biscuits from the same material.
Chris B on Aug 3, 2015
project
Scott K on Aug 1, 2015
Slick cut. . Like this.
Gene N on Jul 31, 2015
They are for a current project. The Rockler name and price and availability made it an easy choice
BradN on Jul 19, 2015
Fits my trim router and unable to buy locally
melinda F on Jun 29, 2015
I'm making some frame panel doors with curved tops so I'll use this to make the panel slots.
Michael E on May 11, 2015
I need to cut a 1/2 in deep 1/4 in wide groove in a door that I am hanging with a barn door kit.
Ross C on Apr 10, 2015
for my table top fasteners
No Sparks on Apr 21, 2018
I have devised a new way to join corners for large picture frames that requires slots. This bit will provide the slots.
KEITH M on Feb 25, 2018
Installing a barn door that is 1 ¾ inches thick. What is the best bit to use for making a slot in the center of the bottom of the door for a door guide? The cut needs be ¼ inches wide and 7/8 deep?
frank on Aug 27, 2015
I want to frame a stained glass piece =I need to cover 1/2" W zinc edge- 1/4" H. Need a slot cutter for router table- would want the groove a little deeper than the 1/2" W zinc to make sure of total covering. My first attempt to frame. Need 1/4" shank. Which bit is best???
Jackie on Nov 7, 2016
BEST ANSWER: This router bit will not cut deeper than .46 in.
Is this bit for router table use only or can you use plunge router?
A shopper on May 1, 2015
BEST ANSWER: 1/4" shank 3 wing slotted router bit, is primarily decided for handheld routers with variable speed control. If you can lock the plunge router so that it is not moving up and down, than you should have no problem using it.
What is the diameter of the bearing (needed to determine the depth of the cut?
David C on May 14, 2018
BEST ANSWER: These slot cutters feature a 22mm bearing set to cut 1/2" deep into the edge of your material.
Does this bit come with an assortment of bearings so you can choose your amount of depth cut?
Doris F on Jul 17, 2016
BEST ANSWER: I am sorry, this bit is only available with one bearing
how to use this bit to cut biscuit joints?
Don W on Sep 2, 2019
BEST ANSWER: It's as simple as chucking it in your router, set your depth & go for it. Wouldn't hurt to try it on a piece of scrap wood to get a feel for it. Make sure the work is clamped down, two hands on the router issafer & better control. Good luck!!!Enter
what is max rpm for 92178 router bit?
chriss on Jul 19, 2018
BEST ANSWER: Router speed should be between 16000 and 18000
Can the bearing be oriented to the top of the cutter?
Mitch H on Jul 3, 2016
BEST ANSWER: Yes you can. I suggest adding a third washer since the bearing seats against the shaft.
what is the safe no load speed for the 5/32 slot cutting bit?
bittoold on Jun 7, 2016
BEST ANSWER: 10,000 rpm
what is max rpm for 92178 router bit?
chriss on Jul 19, 2018
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