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Founded1930; 93 years ago (1930)
FounderSundel Doniger
Westerville, Ohio, United States
ProductsUtility knives, office supplies
ParentElmer's Products, Inc.

X-Acto is a brand name for a variety of cutting tools and office products owned by Elmer's Products, Inc. Cutting tools include hobby and utility knives, saws, carving tools and many small-scale precision knives used for crafts and other applications.

An X-Acto knife equipped with a "Number 2" blade.

X-Acto knife

Parts of the Exacto Knife from left to right: (1) Handle, (2) Collar, (3) Collet, (4) Blade

An X-Acto knife may be called an Exacto knife, utility knife, precision knife, or hobby knife. It is a blade mounted on a pen-like aluminum body, used for crafting and hobbies, such as modelmaking. Before the availability of digital image- and text-processing tools, preparing camera-ready art for use in printing (literal cut and paste or paste up) depended heavily on the use of knives like the X-Acto for trimming and manipulating slips of paper.

A knurled collar loosens and tightens an aluminum collet with one slot, which holds a replaceable blade.

There are numerous other knives on the market with very similar designs. Blades are typically interchangeable between different brands.


The original knife was invented in the 1930s by Sundel Doniger, a Jewish Polish immigrant to the United States. He started a medical supply company in 1917 producing medical syringes and scalpels with removable blades.[1] This would later be his inspiration for the X-Acto brand of knives.[2][3] He had planned to sell it to surgeons as a scalpel but it was not acceptable, because it could not be cleaned. His brother-in-law, Daniel Glück (father of poet and 2020 Nobel Prize in Literature laureate Louise Glück), suggested that it might be a good craft tool.

In 1930 a house designer asked Doniger if he could create something for him that would help him crop some advertisements, Doniger agreed and created what is now known as the X-Acto Knife.[2]

X-Acto office products

In addition to knives, blades, and tools, X-Acto produces office supplies including pencil sharpeners, paper trimmers, staplers, and hole punches. X-Acto sharpeners are electric, battery, or manual. X-Acto has three types of trimmers: razor, rotary, and guillotine.

Boston brand

Through 2012, X-Acto sold ceramic and convection space heaters and fans under the Boston brand name.[4]


The use of the X-Acto knife had gained notoriety in May 2012 as it was used by Luka Magnotta who killed and dismembered Lin Jun in an Montreal apartment. During the trial in 2014, the knives were recovered but it is possible the X-Acto knives could be definitively linked to the murder.[5][6]

See also


  1. ^ Busta, Hallie (25 February 2014). "A Slice of Design History: How X-Acto Built a Better Knife". Architect Magazine.
  2. ^ a b Stamp, Jimmy (11 March 2014). "For 80 Years, X-Acto Has Been on the Cutting Edge of Edge Cutting". Smithsonian Magazine. Retrieved 9 October 2020.
  3. ^ "Seder ritual" (PDF). Retrieved 22 December 2019.
  4. ^ "Ceramic Heaters | Heater with Fan | Convection Heater | X-ACTO". 24 May 2012. Archived from the original on 24 March 2012. Retrieved 9 October 2015.
  5. ^ Luka Magnotta called courteous and cultivated by French witness CBC. Retrieved March 13, 2023
  6. ^ "Crown's last in-person witness testifies at Luka Magnotta trial". CTVNews. 27 October 2014. Archived from the original on 28 October 2014. Retrieved 27 October 2014.