Scrapers are particularly useful in smoothing cross-grained pieces of wood, and in cleaning off glue, old varnish, etc.
There are various devices for holding scrapers in frames or handles, such as the scraper-plane, Fig.

111, p.

79, the veneer-scraper, and box-scrapers.

The _veneer-scraper_, Fig.

151, has the advantage that the blade may be sprung to a slight curve by a thumb-screw in the middle of the back, just as an ordinary scraper is when held in the hands.
In use, Fig.