Miniature circular saw. Miniature circular saw the better cut thick textolit

Hello everyone. On working moments needed a fiberglass specified. But it's not right away at once. In one place they sell but they do not cut, elsewhere cut but not sell. Sold glass skidstolitical by weight. And mostly sheets are not small. In one store, I found a sheet 1m on 0.95m strange little size;)
I did not find the cutting of fiberglass in Moscow, I found several places where they cut from 15-100 km from MSK. And cutting road) 3500 per meter. Therefore, we decided to cut with your own hands, on their own)

The cutting of fiberglass is similar to a sharp plexiglass

Since I cut him alone, I decided to fix it first.

For insurance for fiberglass put an organity, suddenly carried away)

Whatever the cut was perfectly smooth, it was glued to the cut-off line to the two-way tape and the molar tape (temporary) iron line.

The knife for cutting was used as for cutting the plexiglass. Just because of the fact that it is a glasskestolit, it acciled him twice (during cutting).

To accelerate the process cutting fiberglass, between the sharp knife "passed" several times with a metal with a metal. She also quickly faded and scored. And very quickly heats up.

Miniature a circular saw for cutting textolite is very convenient and useful thing In the manufacture of printed circuit boards at home. It is not entirely convenient for scissors for metal, especially when the size of the workpiece is much larger than the length of the cutting blade of scissors. In principle, cutting everything is fine, and then the textolite begins to bend or take the shape of a spiral, the foil can be peeling, in general This method creates extra efforts. Of course, it is of course to cut the cutter made from hiscellular clothbut this method can be used when you need to cut 1-2 blanks, and if there are many of them, this process is very long and tedious. Therefore, in this article I suggest everyone to make it yourself at home desktop For cutting of a textolite, which will make it much easier for the manufacture of printed circuit boards.

Assembly miniature Circular lashes began to make from the primary materials, the fact that there was a house in the storage room. Connectantly cutting discs will have to be purchased on the market or in the store.

Cutting disk and machine parts

In the market of tools, where they sell drills, grinders, perforators found a disc slotted milling mill with an outer diameter of 40 mm and a thickness of 0.25 mm, type I, Z \u003d 100, inner diameter 10mm. It is advisable to put a mill with an outer diameter of 50 mm, but unfortunately this was not found from the sellers.

The base to which the disk cutting mill will be fastened, it is desirable to make on the lathe, but this is if anyone has such an opportunity. I also in the absence of a familiar Tokary invented everything on my own. I am my own device that will keep the cutter I made from the video head From the emerging video player.

The principle of action is to remove the head from the hull and disassemble it.

From one half of the device, you need to knock out the shaft, on the other half, delete everything too much, as shown in the photo. The shaft from such a video head has a diameter of 6 mm. The problem of the pulley for this shaft arose. The weight was found in this way - I found a suitable bolt made from brass, in the center drilled a hole with a diameter of 6 mm. Put this bolt in the cartridge drings And with the help of various nick and sandwich, made pulley for shaft and electric motor.

For the mounting of the disk cutter, parts from a ceramic variable resistor can be used. The capacity from the potentiometer has a M10 thread, and its internal diameter is 6 mm, this is what was required! Next, pressed on the shaft and soldered to the blank made of bronze, which is located on the video head.

About Elektromotor

Initially, the whole fit was produced under the DPR-42-H1-03 Motor, shown in the photo.

But such an engine was weak in power, I had to change to a more powerful, which could freely drill metal plate Drill 4 mm at 30V. Motor powerful but the diameter of the shaft is 4 mm.

Mounted on the engine pulley has an outer diameter of 6 mm and made of a 10 mm brass bolt manually. The conducted pulley is also brass with a diameter of 9 mm, was removed from the old tape recorder and the inner hole reserved up to 4 mm.

Password straps can be chopped from a bike camera

Circular saw housing is made of 3 millimeter fiberglass covered with foil on both sides.

Due to the fact that textolit The possibility of assembling the body with a soldering without applying various corners and bolts with nuts to connect without the use of various corners and bolts with nuts to be connected to all who start collecting such machines may differ from mine, as well as material for making, here it's just some kind of fantasy and ingenuity. .

Known series of articles. And recently, Lyuch defended the dister (March 21, 2014) in the specialty 05.09.03 - "Electrical Complexes and Systems" and slowly returns to creativity.
Congratulations to Alexey and wait for new articles!

Production of printed circuit boards in amateur conditions is not a simple matter if you pursue the goal of not only the quality of trace, but also the beauty of the design as a whole.
Repeatedly in the open spaces and friends came to see printed circuit boards, not inspiring confidence in the device is simply due to the appearance.

Fig. one

The beauty of the board folds out of several components and one of the main, in my opinion, - smooth edges and strict rectangular shape (fees more complex form - Rather, a special case).
Cutting the textolite at home is the easiest wholesale metal scissors, but there is a problem - under pressure from the blades, the material is deformed and strates. This is especially true of the modern Chinese-made textolite with which lately I most often had to deal. The degree of deformation depends in general From the skills of the masters, the shape and size of the blades of scissors, the presence of a backlash between them, as well as their sharpening.

Another, also quite well-known, but already a more complex method of cutting is the combination of "Cutter of the fecking of the hacksaw + line of metal" (Fig. 1). There is no deformation here, however, it is noticeably more complicated exactly - not only you need to control the pressure on the cutter, it is also necessary to keep the line so that it does not leave, and it is better throughout the cutting, and not only at the beginning.

Peeping with the holding of the line and not wanting to cut with scissors, I made the simplest device (Fig. 2), which allows you to cut the textolite with a cutter from the knife canvas without fear of quality and practically without effort - a bed for cutting of the textolite.

Fig. 2. Stanna for cutting of the textolite (general view).

The base of the bed can be a piece of plywood or chipboard, a thickness of 15-20 mm. With the help of two bolts, tightly pasted into the base on epoxy resin (Fig. 3), a corner will be drawn to the bed, while the outer edge of the corner is aligned according to the ruler using a file and emery skirt.

Fig. 3.

Bolts, nuts and washers are chosen by stainless, although enough and ordinary, if not cut into an industrial scale. The marked blank is put under the corner and levels along the edge taking into account the cutter thickness (~ 1 mm) inward or outside. In order for the textolit to not slide, a PVC isol (Fig. 4) is pasted on a pressed line of the corner (Fig. 4).

Fig. four.

Turning the nut, we remain only gently to carry out the cutter along the edge of the corner of approximately 7-10 times (for a standard 1.5 mm thickness) until the cut part cannot break down (Fig. 5).

Fig. five.

At the same time, our only task is to control pressure on the cutter. It should be the same all over and not too large.
Cutting out several boards on this "building" different size, I can say one thing - very comfortable in the farm thing! I recommend to get everyone.
The disadvantage is only that it does not know how to automatically control the pressure on the cutter.

While wrote an article, the thought arose to take guides from the A4 printer and make a cutting block with a spring-loaded cutter, but I think, so far, so. Learning to click on the cutter is not so difficult, the main thing is that the workpiece is reliably fixed!

For the sim, I want to say all thanks for your attention and from the soul wish good luck in creativity!