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Scraper Burnisher for Woodturners

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Scraper Burnisher for Woodturners pressure is required to produce a hook, especially on high- pressure is required to produce a hook, especially on high- speed steel tools. speed steel tools. Scraper Burnisher for Woodturners • Heavy pressure produces a coarse hook for roughing Scraper Burnisher for Woodturners • Heavy pressure produces a coarse hook for roughing or shaping. or shaping. Workpiece Burnished hook is • Light pressure produces a finer hook for more Workpiece Burnished hook is • Light pressure produces a finer hook for more on a lathe Scraping sharp and strong. delicate work. on a lathe Scraping sharp and strong. delicate work. Tool The carbide rods and pivot pin are a slip-fi t in the holes. The Tool The carbide rods and pivot pin are a slip-fi t in the holes. The three unevenly spaced holes allow you to obtain different three unevenly spaced holes allow you to obtain different fulcrum-to-burnisher distances to best suit the radii of fulcrum-to-burnisher distances to best suit the radii of different scraper edges. different scraper edges. Tool Rest Tool Rest Turning Turning Traditionally, sharpened scrapers have to be presented to a Traditionally, sharpened scrapers have to be presented to a Traditionally, wood lathe scraping workpiece at a negative angle (Figure 2a) to allow the burr Traditionally, wood lathe scraping workpiece at a negative angle (Figure 2a) to allow the burr tools are used straight from the to begin its cut. This presentation can lead to severe digging tools are used straight from the to begin its cut. This presentation can lead to severe digging grinder. The burr that develops in of the tool. grinder. The burr that develops in of the tool. during grinding becomes the cutting edge. The problem is during grinding becomes the cutting edge. The problem is that such a burr is jagged and fragile, necessitating frequent that such a burr is jagged and fragile, necessitating frequent re-grinding to maintain a “sharp edge”. Not only is the tool re-grinding to maintain a “sharp edge”. Not only is the tool quickly used up, but the finish of the workpiece is poor, quickly used up, but the fi nish of the workpiece is poor, requiring heavy sanding. Figure 2a requiring heavy sanding. Figure 2a The Veritas® Scraper Burnisher eliminates these problems. The Veritas® Scraper Burnisher eliminates these problems. The burnisher forms a sharp, continuous hook. Scrapers Workpiece The burnisher forms a sharp, continuous hook. Scrapers Workpiece sharpened using the Veritas Scraper Burnisher are easy to on a lathe sharpened using the Veritas Scraper Burnisher are easy to on a lathe control, produce superior fi nish, and last longer between control, produce superior fi nish, and last longer between sharpenings. It is the only burnisher that can be used with sharpenings. It is the only burnisher that can be used with high-speed steel scrapers. high-speed steel scrapers. Figure 2b Figure 2b Preparation Preparation A scraper burnished with the Veritas Scraper Burnisher A scraper burnished with the Veritas Scraper Burnisher 1. Two carbide burnishing rods are supplied. One is ground should be presented to the work with the bevel rubbing, then 1. Two carbide burnishing rods are supplied. One is ground should be presented to the work with the bevel rubbing, then at 10° for burnishing scrapers with bevels of 70° or the handle lifted slightly until the tool begins to cut (Figure at 10° for burnishing scrapers with bevels of 70° or the handle lifted slightly until the tool begins to cut (Figure 75°. The other rod is ground at 5° to burnish 75° to 80° 2b). A properly sharpened scraper should produce long, 75°. The other rod is ground at 5° to burnish 75° to 80° 2b). A properly sharpened scraper should produce long, bevel angles. continuous shavings. For end-grain work, the scraper can bevel angles. continuous shavings. For end-grain work, the scraper can 2. Lap the face with a fine sharpening stone or lapping also be used tilted for a shearing cut. 2. Lap the face with a fine sharpening stone or lapping also be used tilted for a shearing cut. abrasive to remove any burr. You should not put excessive pressure on the scraper while abrasive to remove any burr. You should not put excessive pressure on the scraper while turning; the cut is self regulating. Trying to overfeed the turning; the cut is self regulating. Trying to overfeed the Burnishing tool will cause chattering. If you want a coarser cut, apply Burnishing tool will cause chattering. If you want a coarser cut, apply The burnisher should be held in heavier pressure when burnishing to produce the larger The burnisher should be held in heavier pressure when burnishing to produce the larger a vise or screwed to a stationary hook needed. a vise or screwed to a stationary hook needed. surface. Select and install the When the tool stops producing shavings and starts to produce surface. Select and install the When the tool stops producing shavings and starts to produce carbide rod best suited to the bevel dust, it is time to resharpen. carbide rod best suited to the bevel dust, it is time to resharpen. angle desired. Place the scraper Pivot angle desired. Place the scraper Pivot face up on the scraper burnisher. Pin Note: If you do not intend to change fulcrum-to-burnisher face up on the scraper burnisher. Pin Note: If you do not intend to change fulcrum-to-burnisher With one hand, press the scraper distances, sliding either rod into place with a strip of plastic With one hand, press the scraper distances, sliding either rod into place with a strip of plastic down onto the burnisher surface will secure them, avoiding accidental loss when moving the down onto the burnisher surface will secure them, avoiding accidental loss when moving the while grasping the handle with burnisher about. while grasping the handle with burnisher about. the other hand. Position the edge the other hand. Position the edge against the conical surface of the against the conical surface of the carbide rod and draw the edge past carbide rod and draw the edge past the rod with solid pressure against Figure 1 the rod with solid pressure against Figure 1 it, using the handle as a lever and it, using the handle as a lever and the pivot pin as a fulcrum. Firm the pivot pin as a fulcrum. Firm Veritas Tools Inc. Ottawa ON K2H 1C2 Canada veritastools.com Veritas Tools Inc. Ottawa ON K2H 1C2 Canada veritastools.com © Veritas Tools Inc. 2018 242 INS-445_B © Veritas Tools Inc. 2018 242 INS-445_B.
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