Work author - RFVYB (Uradosh)
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I wanted to show how I prepare pebbles to engraving already more than in the previous MK. I think that it is necessary, as the rules of good tone, the material must have a minimum of flaws. You can not pick up a stone from the ground and just scratch ... or rather you can, but it will be no longer the way we avoid the situation when the stone can cause allergies, leave divorces on the body or crack and leave and leave from ourselves only the upper part on the story.
If the stone is fragile, then with these procedures, I will scatter in my hands or gets great. And this is already confidence that the buyer is selling a quality thing.
Requires effort and time preparation, but it is worth it. Yesterday, in the evening I sat down for the window sill with this business. Preparing 7 stones- "week"
Previously, treatment was performed with the help of emery papers with various grains, but for some time there are significant help in the form of bormer Proxxon IB / E
Here is the collection of pebbles of waiting engraving. They have different sizes, thickness, shades of color, sprinkle quartz, etc. Many have scratches, chips and peels.
Choose from them several
We will make a catalon. Now the stones need to drill. I start almost always from now on. Always the Soviet hand drill is always clamping a stone in the vice. She is already hopeless and drill Bormachina. We put the drill of the desired diameter. I have 3mm. There is a certain plus- You can keep a stone in your hand or hold onto the surface of the stand / tray.
Under the stone I take a metal cover from under the liver stone during drilling heated, part of the heat is absorbed / is distributed by metal. The cover has flights, it means dust from the stones when vibration does not roll out of it. While I will remark how this torment is trying to arrange the escape. I will drive today on the windowsill and burn stains so quite real. Under the cover laying old journals- secured surfaces
I take several stones at once. While drill, it is heated, I postpone, I take another and so far it will cool for the next navigation. Everyone has deep holes from the drill. Almost simultaneously all the stones are with holes.
Drive on turns from 5000 to 8000. With increasing revolutions, the drill can already be filled with a stone from the inside, and the breed is roaring.
Already at the very end, the drill was breaking. Here the reasons are somewhat excessive handpiece on the instrument, the angle could not take it, among other things, it is already split. In this diameter last. I finish drilling with another diameter. Then expand the holes.
It turned out such holes with chips around
We change the nozzle. We make holes carefully
That's what happened. Now dust everywhere. Fight it is useless, but to wet pebbles yet
Now (I will show on one stone for comparison) you need to remove the top crust of the Millimeter stone for 2-3. The flaws will be removed, unnecessary inclusions and scratches. The surface will become more uniform.
I take the paste of gay that the most of the metals are rhined. I tried different, but I like the result only with this.
And the sharpening circle from Corunda (I use less frequently from silicon carbide only if you take a smaller layer). This circle very intensively removes the breed from the stone surface. Lubricate pasta so that the divorces do not leave. Also, we lubricate the stone from all sides. In the future, we will polish less.
Excessive removed and such an encouraged pebbles received. We take a brass brush. Stone again smear paste gay. Turns using the maximum - 20,000.
The surface of the stone will become oily, glossy, with a metal shine / oxide.
Now pebbles are laundered from the film using Fairy. We rinse many times, three synthetic sponge and leave for a short time in water tanks. Wipe the rag cleaning the extra moisture.
In the photo the final result of polishing. Stone among unpaired analogs. The difference is obvious. Now it is fully prepared for further action - engraving. Strokes will be clearly visible.
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