Seam Separation Knife

  • 13 Reviews
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The ideal knife for removing tops, backs and fingerboards from most instruments.

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Seam Separation Knife

Item # 4465
In stock, ready to ship!


Total: $0.00
Quantity: 20


The ideal knife for removing tops, backs and fingerboards from most instruments.

The stiff 3-3/4" x 3/4" high-carbon steel blade has a long knife edge that is capable of cleanly entering narrow cracks for separating a glue seam.

The gentle wedge-shaped cross-section exerts the ideal pressure to help the glue yield, yet doesn't tend to cut into the wood. The blade can be heated and moisture applied to help speed the work. Hardwood handle.

Trade Secrets! Newsletter

Using a "swiss cheese knife" to fix the back on a 1923 Gibson

Dan Erlewine's working on great old Gibson L-1 with back problems. The challenge: how to fix this on a budget today, in a way that won't interfere with more thorough repair work in the future.

Ratings & Reviews

Seam Separation Knife

  • Based on 13 Reviews
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By John L from Kalamazoo, MI
(Customer's Reviews) Sunday, April 28, 2013

This is my go-to tool when a seam is resisting my efforts to separate it. Very sharp, no gouging, but strong enough to apply necessary leverage.


By david emswiler from bellville texas
(Customer's Reviews) Thursday, September 27, 2012

Sharp...oh and just in case I did not mention ... SHARP SHARP SHARP... Multiple uses at the desk...
DId I say...SHARP?


By ianianianianian from london
(Customer's Reviews) Thursday, August 16, 2012

it's a decent knife. it's cheap, works super. no complaints here.

Great knife

By Crawfish from Maryland, USA
(Customer's Reviews) Monday, August 06, 2012

Super useful for opening up seams. The razor edge is just that - quite sharp. A no-brainer, especially given the price.

Seam Separation Knife

By Gusty from Ro
(Customer's Reviews) Friday, July 06, 2012

A very useful tool.

Multipurpose Knife

By Little Crow from Atlanta, GA
(Customer's Reviews) Monday, June 18, 2012

When you need a good, sharp, sturdy blade to wedge in between things, this is your knife. For the price, it is superbly made and useful in many applications.

Cool tool

By Jon Herter from Syracuse, NY
(Customer's Reviews) Tuesday, April 17, 2012

I like this tool a lot. It will replace some of the knives and chisels I have used in the past for multiple jobs. Including hand cutting v shaped patches for cracks in spruce tops.

Another Pleasant Surprise

By Moo from NYC
(Customer's Reviews) Thursday, March 15, 2012

Just like the offset knife - this is a dandy tool. Inexpensive and well-made in good old Nippon(Japan). Sort of the Ibanez of knives ;-) The blade is great- I use it as-stated to open up seams I'm getting ready to re-glue.

Fretboard removal made easy

By Bonneur from South Bend, IN
(Customer's Reviews) Tuesday, February 21, 2012

I will never attempt another fretboard removal with anything but this tool. It cut my time by 60% and leaves the separation seams clean enough to not require additional finishing upon reassembly.

Simple Excellence

By J. E. Mike Tobey from Davenport, Iowa
(Customer's Reviews) Sunday, August 28, 2011

This gem is a "fooler." In reality, the gentle wedge and razor sharp leading edge makes for controlled separation of glued seams. What was a purchase on a "whim," has become a reliable tool.

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Shown on page 29 of our latest catalog.