Types of Card Scrapers
– Various scrapers, including burnisher
– Card scrapers are available in different shapes and sizes
– Common rectangular shape: approximately 60mm ×180mm (2in ×7in), thickness of 0.6 to 1.0mm (0.024 to 0.039in)
– Gooseneck scraper has a shape resembling a french curve, useful for curved surfaces
– Small flexible rectangular scrapers are useful for scraping convex shapes
Turning the Burr
– Burnisher is used to turn the burr on the edge of the scraper
– Jointing the edge of the scraper with a file or sharpening stone
– Cabinet makers joint the edge square, luthiers often use a beveled edge
– Process of turning the burr varies, personal preference involved
– Properly turned burr allows the scraper to produce shavings resembling those from a plane
Usage of Card Scrapers
– Card scraper is held by the fingers and tilted in the direction of travel
– Degree of tilt controls the effective angle of the cutting edge
– User may flex the scraper slightly to prevent marring the workpiece
– Scraper can be drawn towards or pushed away from the user
– Mastering the usage of a card scraper requires practice and skill
References
– ‘Håndverktøy og håndmaskiner for trefagene’, Oslo, Norway: Universitetsforlaget, 1984, p.73f, ISBN8200350991
External Links
– Wikimedia Commons has media related to Card scrapers
– Step by step instructions for sharpening and burnishing a scraper on the Mottola Lutherie Information Website Source: https://en.wikipedia.org/wiki/Card_scraper
This article relies largely or entirely on a single source. (April 2020) |
A card scraper or cabinet scraper is a woodworking shaping and finishing tool. It is used to manually remove small amounts of material and excels in tricky grain areas where hand planes would cause tear out. Card scrapers are most suitable for working with hardwoods, and can be used instead of sandpaper. Scraping produces a cleaner surface than sanding; it does not clog the pores of the wood with dust, and does not leave a fuzz of torn fibers.
