What is a rasp? Varieties and peculiarities of operation

What is a rasp? Under this definition, a special kind of file familiar to us is known. The tool contains the most textured, sharp and rare incision of all the devices of this sample. Therefore, its working surface is extremely difficult to clog with small particles. Thus, the rasp on wood, other materials makes it possible to perform faster processing of blanks.

Areas of use

What is a rasp and what is it used for? Such a tool is used to process a number of materials that are characterized by a rather compliant structure. First of all, it is wood, plastics, soft metals, leather, plasterboard, alabaster.

File rasp facilitates the rapid, high-quality removal of large irregularities. Therefore, the masters use the tool for initial surface treatment. Especially convenient rasp for wood, because the presence of a rare notch on its working plane does not allow the chip to be clogged 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 incisions per cm ² ;
• Average - from 12 to 18 incisions per cm ² ;
• Small - from 18 to 22 incisions per cm ² .

The form

The standard tool is a flat rasp. It is used when it is necessary to cut the workpieces, remove the hangnels from the surface of metal or wood products. Raspies of the presented form are made of strong tool steel.

What is a rasp round? Devices with a rounded working surface open the possibility for processing all kinds of holes, uneven surfaces of unstable materials. Often, these tools are used in the performance of metalwork.

As for rasps of semicircular shape, the latter can be used for processing not only concave, but also flat blanks. They are used when cleaning the surfaces of holes of large diameter.

How to use the rasp correctly?

So we found out what a rasp is, what kinds of adaptations are available to masters. Now let's look at the proper operation of the instrument.

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 material being processed. It is with this setting of hands that reliable control over the instrument will be carried out.

When preparing for work with a rasp, the workpiece must be fixedly fixed in the clamp. Holding the tool with both hands, it is necessary to carry out it with an invoice part for the workpiece. Moving the rasp should be diagonally in relation to the wood fibers. This will make the machined surface as flat as possible.

Tips for tool care

In the course of the work the rippled surface of the rasp can be clogged with large shavings, dust and sawdust. How to remove trash so as not to damage the instrument? You can clean it by easily striking against a wooden surface. To clean up the incisions, it is sufficient to use a wide brush with a short metal bristle. When is it necessary to start cleaning the instrument? Do this if the rasp has ceased to remove the layers of the processed material.

Another way to care for the rasp concerns the work with plastic blanks. Remove synthetic shavings and sawdust from under the notches of the instrument will allow it to be lowered into a container filled with boiling water. As soon as the plastic particles soften and fall behind the rasp marks, it is necessary to wipe it with a piece of soft material and leave to dry in the fresh air. In order for the metal not to rust after the above actions, it is necessary to lubricate the tool with an insignificant amount of vegetable or machine oil.

Eventually

As you can see, the rasp is a rough version of the file. The operation of the tool 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 in that along with the files, its notches are not so quickly clogged with shavings.