Endpin Jack Reamer

  • 22 Reviews
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This machined steel 2-step reamer is made specifically for enlarging a guitar endpin hole to accept a 15/32" or 1/2"-diameter endpin jack.

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Endpin Jack Reamer

Item # 4323
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Total: $0.00
Quantity: 20


This machined steel 2-step reamer is made specifically for enlarging a guitar endpin hole to accept a 15/32" or 1/2"-diameter endpin jack.

It won't chip the finish, and it's semi-fluted to help keep the hole round.

The 3/8" shank can be chucked in a hand drill for slow reaming. The upper 1" cutting length is 1/2" diameter; the 1" center section is 15/32" diameter, and the lower 2-5/8" section has a standard 5-degree endpin taper to 1/4".

Trade Secrets! Newsletter

Installing an endpin jack

Ever have trouble installing an endpin jack? Did you chip the guitar's finish, or drill the hole out-of-square? Did you goof up on a customer's guitar? You'll want to read this week's Trade Secret from Dan Erlewine.

Ratings & Reviews

Endpin Jack Reamer

  • Based on 22 Reviews
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First time with confidence.

By Rob Gundry from Orrville, Ohio
(Customer's Reviews) Monday, September 16, 2013

I purchased a L. R. Baggs "Lyric" to install into my Martin, Eric Clapton, 000-EC. I discovered the necessity of changing the endpin diameter. I always look to Stew Mac for assistance with any guitar related project. Sure enough not only was a specific tool available but instructions on how best to use it. Yes the price is high but when I received it and saw the quality I felt better. When I picked up one of favorite guitars and used it then I really didn't have any complaints as my Martin had been reamed without any damage! Thanks Dan for another awesome solution to an project problem. (By the way, the end result sounds fantastic!)

Many other use besides endpin jacks

By Tai Fu from Taiwan
(Customer's Reviews) Wednesday, April 24, 2013

If you need a reamer for fitting endpins or endpin jacks, this is it. It may seem expensive for a reamer, but I was using a repairman's reamer before this and that reamer cuts very wild/jagged holes because the cutter would dig in so deep. The semi fluted design means this reamer will cut wood very well... You can also use it for enlarging tuner holes to fit those 10mm tuners, or even use it to enlarge holes on the guitar body to accept CTS pots... Like others have said a hole or a flat on the shank would be nice, because this reamer cuts very fast, so if you aren't doing just endpin jacks it's very easy to make the hole too large.

The ONLY tool that works.

By sbuntrock from Buchanan Dam, TX
(Customer's Reviews) Thursday, October 04, 2012

I didn't want to damage the finish of my baby, a Guild D-40, and experimented with other tools and found nothing that wouldn't cause some damage around the edge of an endpin hole. Reluctantly, I ponied up the price for this exhorbantly costly drill bit as a last resort.

It works. What else can I say? A nice, clean, smooth hole with absolutely no damage to the finish of my baby. If it wasn't so expensive I'd give it 5 stars, but it is worth the price anyway.

Works Perfectly

By Middleton Guitars from Southern California
(Customer's Reviews) Tuesday, May 29, 2012

Like the other reviews: It seems like a lot of money, but the results you get and the piece of mind knowing that there won't be any kind of damage around the the hole is great!

what a great piece of kit!

By Andybanjo from UK
(Customer's Reviews) Friday, April 20, 2012

I've only just replaced one of these that I've for something like 20 years. it made a vast number of holes in various instruments and served me brilliantly. it was a great pleasure to get a brand new one after all these years and find that it's exactly the same as the old one! well done, guys! it wasn't broke and you didn't fix it ....... :-)

Amazing End Pin Reamer

By Ryan Schultz from Aurora, IL
(Customer's Reviews) Saturday, March 17, 2012

WOW, talk about getting the right tool for the job. After using this on two guitars, I can't imagine doing it any other way. The tapered reamer and then the straight part is so perfect. Very professional.

Essential Tool!

By Wilmer Gingerich from Jamesport MO
(Customer's Reviews) Saturday, December 17, 2011

Makes installing end pin jacks a piece of worry free cake!

Endpin Jack Reamer

By Mark Tonelli from Australia
(Customer's Reviews) Sunday, October 09, 2011

This is truly a great product ensuring a safe way of installing an endpin jack.
Especially when working on expensive guitars!
Great design!

Professional tool

By Reyer from The Netherlands
(Customer's Reviews) Saturday, August 27, 2011

This is a great tool that does the job perfectly every time.
It is not cheap, but it pays itself back very quickly in a professional workshop.

You need this

By spinality from Gardiner, WA
(Customer's Reviews) Sunday, July 03, 2011

If you are interested enough to be reading this review, then you definitely need this reamer. I vacillated for weeks trying to decide whether to order it, because the reamer seems quite expensive and I don't need to do this operation very often. But five minutes after receiving it, I knew getting it was the right decision. It does the job quickly, precisely, and easily. Just follow the directions. In my case, my first project didn't involve expanding an existing end pin, but creating a new jack hole. It was quite simple to drill a 1/4" hole, vastly easier than drilling a 15/32" or 1/2" hole, and from there it was duck soup to ream out the additional material.

However, I've given this reamer four stars instead of five, because the end of the reamer is a cylindrical shaft. This is fine for putting into a power drill chuck, but in my case I'd rather ream by hand. I wound up using a bit brace, but I would have preferred an easy way to attach a handle. Perhaps a cross-drilled hole or a flat side would make this easier. However it is a minor complaint and the reamer worked flawlessly with a bit brace.

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Shown on page 24 of our latest catalog.