Tools , Polishing Materials and their Upkeep.
THE CABINET SCRAPER.
Successful use of the scraper depends primarily upon its correct sharpening. It should take off shavings similar to those from a plane, but much thinner.
CHOOSING A SCRAPER.
In choosing a scraper, select one of medium thickness. If too thick, it will require a great deal of exertion to keep it bent and will prove to be tiring. On the other hand, a thin scraper will rapidly become hot and burn the hands. The quality of the metal in the tool will determine the longevity of the cutting edge, particularly when used on an abrasive timber such as Jarrah - this tends to be reflected in the purchase price although not always. Most higher quality scrapers have a name or brand etched into their surface.
SHARPENING THE SCRAPER.
The edge must first be made square and smooth. If re-sharpening a used scraper, remove the old
burr with an oilstone held flat against it. Be careful not to round the edge. (Note, new scrapers
need to be sharpened before use).
The scraper is then held in a padded vice and draw filed with a fine cut mill file along the edge, as shown in fig 1. The corners are slightly rounded to prevent their digging in when the scraper is used.
The square edge is next rubbed on an oilstone to remove the file marks.
It should be held vertically as in fig 2. and gripped with a rag to prevent damage.