Neck Joint Router Bits

  • 9 Reviews
  • Write a review

We developed these tools for cutting accurate neck joints, available for a traditional Martin dovetail, or for a straight mortise and tenon.

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Neck Joint Router Bits Dovetail


Item # 4781
In stock, ready to ship!


Neck Joint Router Bits Straight cut

Straight cut

Item # 4782
In stock, ready to ship!


Total: $0.00
Quantity: 20


We developed these tools for cutting accurate neck joints, available for a traditional Martin dovetail, or for a straight mortise and tenon.

Each custom made cutter bit is carbide-tipped for long life. 1/4" shank and a 1/2" guide bearing. Designed for use with the Acoustic Neck Joint Routing Templates.

#4781 Dovetail bit
Overall length 2-9/16" (65.09mm)
Shank length 1-1/2" (38.10mm)
Maximum cutter diameter 9/16" (14.29mm)
Cutting length for
10-degree dovetail angle
13/16" (20.64mm)

#4782 Straight cut bit
Overall length 2-5/16" (58.74mm)
Shank length 1-1/2" (38.10mm)
Maximum cutter diameter 1/2" (12.70mm)
Cutting length 13/16" (20.64mm)

Product Instructions

Acoustic Neck Joint Routing Template Instructions

Routing instructions for acoustic neck joints.

Ratings & Reviews

Neck Joint Router Bits

  • Based on 9 Reviews
Write a review

Great Quality Stewmac!

By justinarts from West Texas, USA
(Customer's Reviews) Sunday, May 04, 2014

I have been using these for years and they really deliver.


By JSD from Europe
(Customer's Reviews) Tuesday, April 01, 2014

The dovetail bit works perfectly!

Cuts great

By David Vicars from Texas
(Customer's Reviews) Tuesday, August 06, 2013

Used this on two guitar builds so far so good. we wilol see how long it lasts.

Perfectly clean cut

By Mike Lee from Brisbane Australia
(Customer's Reviews) Friday, January 04, 2013

I used the straight bit with the template. The cut was very clean and precise

Neck Joint Router Bits

By BobDWilliams from Woodbridge, Va
(Customer's Reviews) Sunday, April 15, 2012

These router bits are extremely sharp and easy to cut with. I am able to make perfectly fitting joints with these because they cut so smoothly & cleanly without burs. These bits execute flawless perfect patterns outstanding results every time. I love working with quality tools and equipment, thanks for including these tools, supplies and accessories in you warehouse. You hold all of the proper materials any builder would ever want or need! My wife might hate you, but I LOVE you! hahahahah


By Jerhico Guitars from Altona, NY
(Customer's Reviews) Thursday, March 29, 2012

Like all the bits Stew Mac offers, these are great.

You shouldnt be let down.

Router bit Neck

By Roberto Portes Luthier from Santa B+írbara d-¦Oeste SP Brasil
(Customer's Reviews) Sunday, July 17, 2011

Excelente Produto.
+tima Qualidade

Great Tool

By Albert L from New Jersey  USA
(Customer's Reviews) Sunday, November 28, 2010

The cutters are really very nice. I had a bit of trouble though using them with the router templates. By the time I had them deep enough to follow the template on the bearing, I had accidentally cut one edge of the plexi template since the bearing had not yet met the required depth. After a few planned out adjustments I can compensate but I think I am going to go to a router guide instead of the cutter guided bearing

Dovetail joints, old school

By Walton Guitars from Markham Ont. Canada
(Customer's Reviews) Friday, July 30, 2010

I have been building guitars for quite a number of years now, for the most part I have been using bolt on necks, for simplicity and as a time saver...but something just didn't feel right, it wasn't true to the art for me I decided to go back to Dovetail joints. I purchased your Dovetail bit, and made the jig you show the plans for. The jig works perfectly,and the bit is extremely sharp and clean. I am very happy to have gone "Old School" I can always trust and rely on Stew Mac to carry the best.. you guys have never let me down

Thanx K. Walton

Shown on page 26 of our latest catalog.