Books › The Repairing & Restoration of Violins, 1903 › scan 88
Scan 88
The Repairing & Restoration of Violins, 1903
2 lines. Read by computer on 3 September 2026. Printed page 70. See the scan on archive.org.
1even when it is backed by a piece of hard wood, there will be found, when the test comes, a rotundity of surface that was deemed impossible under the circumstances. Careful scraping of the surfaces must be chiefly relied on for exactness. As good a mode of proceeding as any is as follows—after the first roughing into shape and then flat chiselling has been done to as great a nicety as possible, all the irregularities—there are sure to be some—can be worked down with the edge of a straight square file, used very steadily and crossways repeatedly. This done sufficiently and tested with some hard and truly cut substance, metal preferably, will be an exactly flat surface for working upon the final or finished surface. The next thing used will be a carefully sharpened and keen edged steel scraper. To put this tool into proper order for the purpose, it must be sharpened on a hone, not exactly at right angles, as the first impulse would suggest. The hone, or stone, must be quite flat and unworn. If done carefully, a nice level edge will be perceptible along its course, but it is not yet at its best. Placing it on a bed of hard wood, or evenly shaped mass of iron, projecting over and held firmly in position, a good stout brad-awl may be passed along from end to end, keeping the awl perfectly flat on the horizontal surface. The scraper may now be turned over and process repeated, but not in the same manner or angle, for the awl will be held vertically with the handle downwards and firmly pressed along the edge at right angles with the horizontal plane, this will cause a burr right along which will have a razor-like sharpness and cutting power. This scraper can now be applied (not too heavily) over the filed down surface, and thus work down finally all irregularities left by the file. The adaptation of this tool will at once be perceptible in the fine whitish soft shavings that will come off during its application. A little repetition across and across should give an almost perfect level. Different sized scrapers may be used for the other surfaces where it is desirable to obtain the most accurate fitting. If all the processes have been properly carried out, the parts
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