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1/4" D x 1" H x 1/4" Shank Rockler Down-Cut Spiral Bit
1/4" D x 1" H x 1/4" Shank Rockler Down-Cut Spiral Bit Item #28741
In stock
$39.99 Each
3/8" D x 1" H x 1/2" Shank Rockler Down-Cut Spiral Bit
3/8" D x 1" H x 1/2" Shank Rockler Down-Cut Spiral Bit Item #24959
In stock
$34.99 Each

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Onsrud Down-Cut Spiral Router Bits

Down-shear spiral action prevents chip-out and fuzzing at the edge of the cut—ideal for cutting clean dados, grooves and rabbets.
Item #
GRP11263
Rating:
60% of 100

Down-spiral cutting action forces the chips down into the groove, eliminating the tendency for wood fibers to chip out the face. Double-flute design with HSS (high speed steel) construction for a smooth finish.


Recommended when chip flow should be directed down for a clean cut on top of the material.

(1) Onsrud Down-Cut Spiral Router Bit
More Information
Weight 0.1500
Tech Spec
  • Material: High speed steel
  • 28741: 1/4" Shank, 1/4" Cutter Dia., 1" Cutter Length, 3" Overall length
  • 24959: 1/2" Shank, 3/8" Cutter Dia., 1" Cutter Length, 3-1/2" Overall length
Bit Type Spiral
3.0 / 5.0
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
3
0
0
0
3
Onsrud down cut spirai bit
Bit worked well used it on mdf sheeting and needed a clean cut and it did the job.
April 17, 2017
Purchased
over 2 years ago
Woodworking Experience:
Intermediate
downcut bits
Good clean cuts, no off-centered vibration. Exactly what I wanted.
August 27, 2016
Purchased
over 3 years ago
Woodworking Experience:
Advanced
A good Bit
I have used this Bit in my CNC with Walnut. I run the cut very shallow (1/16-1/8cut) with a slow feed rate. I have about 1 hour of routing on the bit and no sign of heat damage on the bit. The cut is smooth. I feel I can speed the cut up and maybe make my Depth a little deeper.
June 16, 2016
Purchased
over 3 years ago
Woodworking Experience:
Intermediate
Not worth the money
I purchased the Onsrud1/4" spiral downcut bit with the 1/4" shank - Item #28741. I cut a couple 7" diameter circles making 4 passes to complete the cuts through 3/4" MDF. The bit is already burned and dull. It is not worth the money.
July 7, 2017
Woodworking Experience:
Advanced
Almost worthless
Just purchased the 1/4" bit to make joints for two medium sized tool cases out of 1/2" Baltic Birch plywood. Halfway through the second case the bit was burned and dull even though cuts were light (1/6" x 3/8") and very easy. Almost ruined the second case. At price one would expect a solid carbide bit, but these are just HSS and not suitable for the intended purpose. Onsrud is a trusted name and usually makes great router bits.
December 15, 2016
Purchased
over 2 years ago
Woodworking Experience:
Advanced
Worthless. Ruined my project and burned itself.
Literally one use and threw it away. Kind of expensive at that rate. And it didn't even give me one good run. I wanted to take it back to the store the same day, but figured they would say I used it wrong somehow (I didn't).
December 7, 2016
Purchased
over 2 years ago
Woodworking Experience:
Intermediate
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Browse 2 questions Browse 2 questions and 2 answers
Why did you choose this?
Rockler Store
First attempt with this product so trying to see if I like it.
Leon s on May 15, 2018
price and not available at Rockler Store San Diego
charles h on Mar 26, 2017
First attempt with this product so trying to see if I like it.
Leon s on May 15, 2018
get lost
LARRY F on Jun 22, 2017
price and not available at Rockler Store San Diego
charles h on Mar 26, 2017
Routing a clock surround face
John C on Dec 1, 2016
Replacement bit.
james j on Oct 3, 2015
For cutting plywood in our CNC router table
stephen s on Apr 13, 2015
get lost
LARRY F on Jun 22, 2017
Routing a clock surround face
John C on Dec 1, 2016
Is this a Carbide bit or just a HSS bit?
Gregg T on Aug 8, 2018
BEST ANSWER: It is just an HHS BIT
Is a down-shear router bit the same as a down cut?
Gene F on Mar 3, 2018
BEST ANSWER: A down shear cutter angles the surface cut to minimize the chipping or lifting of loose grain or veneer. The edge pushes down because of the geometry. The term down cut is inexact but probably references the same phenomena, but is sometimes used for chop saw cuts, so not a clear example.