(1) Pointed-bottom characters: Generally, small strokes are fine, Arabic numerals and foreign languages are used, and pointed-bottom characters are mostly used.
The carving method is to choose the appropriate carving knife according to the requirements of the font, and leave half a line to deepen gradually when cutting. Carve the mouth with a sharp knife, the requirements of the two slopes are the same, the middle is sharp and the depth depends on the size of the characters and the width of the strokes. The edge of the mouth is straight and stiff, so it can't be carved like a sawtooth, and there can't be any edge shock or edge drop.
(2) Semi-circular bottom: The bottom of the word is semi-circular, and the radian depends on the font. At first, it was similar to the above practice. The radian at the bottom of the word should be smooth and consistent. When you encounter a stroke turning point or stroke, you should deepen the difference appropriately, and the strokes should overlap one by one, but not too obvious. If you need gold foil or copper foil, the bottom should be smooth and polished, and no knife marks can be left.
(3) Yang Qunzi: The carving requirements are basically the same, but the shapes are different. That is, the word mouth is carved by the outline of the outside line, and some are carved vertically, generally with a small slope. The middle of the stroke is a convex arc, which gradually slopes from both sides of the arc to the bottom of the edge. The middle of calligraphy and painting forms a gentle slope to both sides, with grooves on both sides. There is also a carving method, that is, the high point of the middle arc is uneven with the stone surface, and some middle arcs are narrow to form a wide groove. These three shapes have better sound effects than before. White marble stone carving
(4) Flat-bottomed characters: Dig vertically from the edge of the characters, and the upper and lower strokes are basically the same width. This carving method generally needs to reach half or more of the stroke width, depending on the effect. This kind of figure is usually sandblasted and carved, and the effect is good.
(5) Yang character: it is a kind of character protruding from the stone surface, which is divided into dome shape and flat top shape, which is labor-consuming and material-consuming, and is still in use under special circumstances. After the word is engraved, it is necessary to perform various treatments on the surface of the word. According to different purposes and requirements, the methods are different.
Stone carving method of engraving machine;
1, common font styles: imitation song style, handwritten font, official script, cursive script, artistic font, foreign characters and seal script are rare, but they are occasionally encountered. The main requirements of lettering are undistorted, straight edges, keeping the spirit of the original characters and full of momentum, which can reflect the original works of famous artists as masters. Before carving handwritten fonts, we should carefully study and understand the relationship between pen ups and downs, and work with calligrapher * * * to determine how to merge, increase or decrease. The outline of engraving strokes should be clear, and some problems must be solved in the manuscript.
2. Magnification and reduction of written words: The commonly used methods include nine-grid magnification, magnification ruler, slide magnification, photo magnification, etc. At present, it is very convenient and accurate to zoom in and out with a copier. The size difference between the written word and the required carved word is too many times, which can be scaled several times.
3. Over-spectrum: Check the spacing, row spacing, up, down, left and right relations of the amplified word spectrum or the written word spectrum to make the lines horizontal and firm, leave the size of the sky (up) and the ground (down), and find out the vertical center line (make records).
Then kiss the reticle completely on the engraved surface of the stone and you can pass the spectrum. The traditional method is to use single hook or double hook of silver anvil. Tick out double lines or single lines on the back of the character spectrum with a brush, make white glue on the stone surface, find the crosshairs, straighten the character spectrum, and use a wooden hammer along the light hammer to make the silver anvil pass through the stone surface, and the spectrum is completed.
This method is troublesome, but its advantage is safety and accuracy. At present, carbon paper is generally used for spectroscopy. In order to keep the original from being damaged, copy it in advance. The back of the replica paper pad with different color from the stone is spectrally printed on the surface of the stone. It is best to draw the outline in one breath, and then compare the original carefully and make necessary changes.