1. etcher
What is meant by etching is the depiction of the cultivation pattern of lines on the workpiece to be worked out. As a guideline for the inclusion of cultivation used size working drawings. So that the line can be seen clearly etching, the workpiece rough spiked with lime basting liquid (pure lime mixed with water and glue) or filled with rubbing chalk. Lacquers are often also used black or red lacquer, for example in parts of the light metal casting.
Field workpieces shiny smeared with a solution of copper vitriol (copper salt + water), will form a precipitate copper which allows the projection lines and angles scratches examination so clearly visible.
Pictures needle scratch
2. The Miser (File)
The most important hand tools for making flakes or cultivation of the workpiece is a miser. Shale formation at the time of filing, teeth miserly shaped pegs take little pieces of the workpiece, resulting in a shiny surface. Miser is made of high carbon steel plated hard and dimudakan. The stalk is left soft so strong. Agency stingy hard and brittle, therefore all stingy must be stored separately and protected to prevent fractures.
-Fisted miser distinguished by the shape of teeth, the type of lateral, lateral division, shape and size. Selection is determined by the miser, the shape and material of the workpiece and the number of decision flakes, surface quality and accuracy of work miserly. The various miserly according to the shape can be divided into:
Miser arm
Miser flat or thin
rough average Miser
Miser squares
Miser triangle
Miser round
Miser hemispheric
Various images stingy
3. Lock Pas
Wrenches are generally made from Chrome Vanadium alloy, with stem (shank) form an angle of 15 degrees on both ujungujungnya and 90 degrees contained in a special wrench. Wrenches are commonly used to speed up the release of the bolt or nut loose. Various kinds of wrenches:
Single open ended spanner image
Picture Double open ended spanner
Open ended slogging spanner image
End wrench generally made into two different sizes (double open ended spanner). For example; size 6 mm and 7 mm. But there are also wrench the size (Single open ended spanner or Open ended slogging spanner) key measure indicates the width of the mouth of keys which means also indicates the size of the width of the head of the bolt or nut. Unit size wrench consists of metric (mm) and imperial (inch).
Metric unit sizes are available in size from 4 mm to 80 mm size. And commonly used mainly in automotive repair shops are size 6 mm with each increment of 1 mm to 36 mm key size, but the size of 31 mm, 33 mm, 34 mm and 35 mm are not provided.