87, страница 25

87, страница 25

1 Flare the Edge. Long strokes with the burnisher held square to the face will flare the edge.

Burnisher

ROLL

ROLL PURR ON THIS EDGE ALSO

A Simple Tools.

A few simple tools make a quick job of creating a sharp burr on the edge of your scraper.

2 Roll the Burr. Now, tilt the burnisher very slightly to begin to roll the flared edge.

3 Sharp Hook. Finally, a couple of light strokes at a steeper angle will create a sharp hook.

How To:

Handle a Scraper

There's really no single way to use a scraper. But, a few pointers will help you get better results.

A Slight Bow. Using a scraper is a two-handed job. The main reason for this is that the flexible scraper works best when forced into a slight bow (lower right drawing). This bowed shape concentrates the scraping action over a smaller area and reduces the effort involved. It also keeps the corners of the scraper from gouging the wood.

Push or Pull. Some woodworkers like to "crown" the blade away from their bodies and push it across the wood (middle drawing). Others, myself included, find it easier to pull the scraper (top drawing). This method makes bending the scraper a bit more work, but for me, it's easier to see and control the cut.

Two Angles. When you draw a scraper across a workpiece, there are a couple angles to think about.

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The first is the pitch or cutting angle of the blade (detail 'a' at right). Hie second is the angle of the long scraper edge in relation to the grain direction. The good news here is that neither angle is critical.

The cutting angle is usually somewhere between 45° to 60° to vertical. But basicalty, it's whatever angle seems to work best. The burr you form isn't always going to be the same size and shape. So basically, ifs just a matter of feel. Fine shavings let you know it's right.

As the drawing shows, the scraper blade is held slightly skewed to the grain direction. This way, the scraper is more likely to hit the high spots and skip over the low spots. To avoid creating ridges, I alternate angling the blade from one side to the other.

You'll find that the learning curve for success with a scraper is a pretty small hill to climb. And it's definitely worth the effort.

PUSH GRIP

PULL GRIP

BURR LIFTS AND PEELS SHAVINGS

WORKPIECE

SKEW SCRAPER TO GRAIN DIRECTION