What to bring&colon; Your passport, HB pencils, erasers, and pencil sharpeners. Electric sharpeners that work with belt grinders are usually classified as expert machines. Carpenter pencils are typically manually sharpened with a knife, although special sharpeners can be used. There are also pencil sharpeners that can exclusively be used with wooden pencils. Following the success of Kolores, Kores launched wax crayons, felt tip pens, pencils and sharpeners. We demo'd knives like the "Ginsu" and our K04SBL "Utility" as well as Sharpeners. In 1942 regulations on stainless steel stopped production of pencil sharpeners and specialty metal items. A few prism sharpeners are hand-cranked, rotating the cutting blade instead of rotating the pencil. Many have obstacles such as cereal boxes on breakfast tables, and pencil sharpeners on desks. Westcott is also known for its line of iPoint electric pencil sharpeners. Pencil sharpeners may be operated manually or by an electric motor. Electric pencil sharpeners for offices have been made since at least 1917. In 1946, the company added pencil sharpeners to its catalog of products. X-Acto sharpeners are electric, battery or manual. These mechanisms are also called planetary sharpeners, in reference to their use of planetary gears.