STRUG

STRUGThe knives or Strug indispensable when machining curved surfaces. To make them simply — it will only have an old file with a length of about 200 mm. In the first file you need to termoobrabotki. Soshlifovat previously a small area, gradually heat the file evenly along its length until, while in ground place appears red-brown film of oxides, after which the file is cooled in water or air. This heat treatment will reduce the brittleness of steel, while maintaining the hardness necessary for cutting edge on plow.

 
In the middle of a file is the sample length of about 50 mm, the width of the file in this place should be about 15 mm.
 
To obtain a cutting edge grind the inner side of the groove at an angle of about 30°. When handling do not overheat the metal, it can lose hardness and wear resistance. The characteristic symptom of overheating — the appearance of the blade tint.
 
STRUG
 
Remove the shank of a file. It can be done with a hacksaw, as the steel was released during heat treatment. Remains dull tool the sharp edges and bring the blade on the whetstone and grindstone and plow ready to work.

Noticed mistape? Highlight it and press Ctrl+Enter, to inform us.

Recommend to read

  • Insurance for drillInsurance for drill
    Drill chuck, in particular manual, is not always able to keep the drill from turning when machining hard metals or release of the cutting edges of metal. It solves the problem of the...
  • CURLY SAWCURLY SAW
    To complete the profile of woodcarving, offer readers a "M-K" to assemble a simple machine based on the electric drill IE-1036Э with electronic regulator of frequency of rotation of the...

Spelling error report

The following text will be sent to our editors: