For an ultra-smooth wood surface, nothing beats a good sharp scraper. Veteran luthier Al Carruth has given the simple scraper an ingenious makeover, with practical improvements for stringed instrument work.
Refined shape for both arched tops and flat surfaces.
1/8" thick for added stiffness and greatly reduced chatter.
Two working edges for scraping with both pull and push strokes.
Durable tempered steel edges, for smoothing harder woods.
At 1/8" thick, this scraper is much beefier than a standard scraper blade. Two cutting edges let the tool work in both directions, without flexing and with less chattering, so you'll save time and effort. The tempered tool steel holds a more durable edge, too. It does an outstanding job of smoothing hardwood surfaces, purflings, rosettes, and more. The overall shape is specially refined for hand-contouring and graduating arched instrument tops and backs, as well as smoothing flat surfaces.
Dimensions #0631 Original: 3-3/4" x 1-11/16" (95.25mm x 42.86mm) #0632 Mini: 2-1/2" x 1-1/2" (63mm x 38mm)
From luthier Al Carruth:
"In Il Segreti di Stradivari, violin maker Simone Sacconi wrote 'scrapers were made from blades of sabers. Since they were of very hard steel one could not turn the edge and therefore they were used like a knife.' When I began working with violin maker Carleen Hutchins she used such a scraper. This is, in my estimation, the best possible scraper for builders of arched instruments.
"It works on the same principle as scraping with a broken piece of glass; a common technique among carpenters. A very hard material can take an exceedingly keen edge and when it is perpendicular, as it is in broken glass, it can last for a long time even if the material is brittle. This tool has the advantage over glass of having a shape that is well defined and re-sharpenable."
How Al sharpens his scraper: "I find it easiest to hollow grind the edge perpendicular to the centerline of the scraper. Simply set the tool rest on your grinder perpendicular to the wheel and grind all around. Use as fine a wheel as possible and don't apply too much pressure. If desired, the edge can be further dressed on a fine stone with or without a guide block.
"In use, this scraper will give an extremely smooth cut even on soft or highly figured wood. It has little tendency to chatter due to its weight and does not heat up. It is much easier on the thumbs than a “normal” scraper as it is not “sprung” in use. To re-sharpen simply lap the surface on a fine stone and re-grind the edge."
Watch the video! Al Carruth shows how to use and sharpen the Ultimate Scraper. Watching Al, you'll see how easy this is.