What is a rasp? Under this definition, a special kind of file familiar to us all is known. The tool contains the most textured, sharp and rare notch of all fixtures of this sample. Therefore, its working surface is extremely difficult to clog with small particles. Thus, a rasp on wood and other materials makes it possible to perform faster processing of workpieces.
Areas of use
What is a rasp and what is it used for? Such a tool is used to process a number of materials, which differ in a rather pliable structure. First of all, it is wood, plastics, soft metals, leather, drywall, alabaster.
The rasp file contributes to the rapid, high-quality removal of large irregularities. Therefore, craftsmen operate the tool during initial surface treatment. A rasp on wood is especially convenient, because the presence of a rare notch on its working plane does not allow the chips to clog between the teeth of the tool.
Varieties of rasps depending on the size of the notches
According to the number of notches on the working surface, the following rasps are distinguished:
- large - from 8 to 12 notches per cm 2 ;
- medium - from 12 to 18 notches per cm 2 ;
- small - from 18 to 22 notches per cm 2 .
The form
The standard tool is a flat rasp. It is used if it is necessary to trim the workpieces, remove burrs from the surface of metal or wooden products. Rasps of the presented form are made of the strongest tool steel.
What is a rasp round? Devices with a rounded working surface open up the possibility for processing all kinds of holes, uneven surfaces of non-solid materials. Often, such tools are used when performing locksmith work.
As for the semicircular rasp, the latter can be used in the processing of not only concave, but also flat blanks. They are used for cleaning surfaces of large diameter holes.
How to use a rasp?
So we found out what a rasp is, what types of devices are available to masters. Now let's look at the features of the correct operation of the tool.
Getting started, it is recommended to firmly hold the rasp by the handle. With the other hand, it is necessary to press its end to the surface of the processed material. It is with this setting of hands that reliable control over the instrument will be exercised.
In preparation for work with a rasp, the workpiece must be fixedly fixed in the clamp. Holding the tool with both hands, it is necessary to conduct it with a textured part along the workpiece. Move the rasp diagonally in relation to the wood fibers. This will make the treated surface as even as possible.
Tool Care Tips
During work, the corrugated surface of the rasp can become clogged with large chips, dust and sawdust. How to remove debris so as not to damage the tool? You can clean it by easily hitting a wooden surface. To tidy the notches, just use a wide brush with a short metal bristle. When is it necessary to start cleaning the tool? You need to do this if the rasp has ceased to remove the layers of the processed material.
Another way to care for the rasp is to work with plastic blanks. To remove synthetic chips and sawdust from under the notches of the tool will allow lowering it into a container filled with boiling water. As soon as the plastic particles soften and fall behind the rasp notches, wipe it with a piece of soft material and leave it to dry in the fresh air. So that the metal does not rust after the above steps, it is necessary to lubricate the tool with a small amount of vegetable or machine oil.
Eventually
As you can see, the rasp is a rough
type of file. Tool operation is mainly used when it is necessary to remove thick layers of material from the surface of the workpieces. The tool is good, first of all, because along with the files of its notch, the chips are not clogged so quickly.