Striped markings refer to straight-grain wood species like Korean pine, larch, eucalyptus, and jujube. These woods have a consistent grain pattern that aligns with the natural direction of the tree’s trunk, without any deviation or irregularity.
Staggered markings occur when the grain direction appears in a rotating or spiral pattern. This is commonly seen in woods such as citron, madong, big leafhopper, and peach wood, where the grain shifts from left to right in a cyclical manner.
Waves and stripes describe a regular, undulating grain pattern caused by the curvature of long wood cells. This creates a flowing, rhythmic effect on the surface. Examples include cherry, maple, birch, Angola rosewood, merbau, and ground wax.
The "back of the piano" pattern, also known as the "Gao" pattern, refers to a wavy or rippled texture that appears on the surface of veneers or boards. It's commonly found in maple, birch, and peach wood, where the surface has a series of small, raised ridges.
Floc-like markings are characterized by irregular depressions in the wood fibers, often forming a scattered, non-uniform appearance. These patterns are typically found in maple and birch, where the horizontal grain is more pronounced than the vertical.
Black-eyed markings result from distorted wood fibers, creating small conical dents in the growth rings. When cut into veneer, these dents form a unique "black eye" pattern, often seen in maple, birch, and chicken account (a type of wood).
Tree-knot markings are formed by the natural knots and growth patterns of the tree. They can appear as feathery lines, fishbone shapes, or fountain-like designs. These patterns are popular for high-end decorative uses, especially in black walnut and peach wood.
Silver-light streaks refer to reflective, shiny patterns on the wood surface, such as horizontal stripes, flakes, ribbons, or irregular ray patterns. These effects are common in eucalyptus, Cyclobalanopsis, longan, sapphire, solo, platanus, South China wood, silver birch, and holly.
Conical markings are created when the wood grows in a more pronounced, cone-like shape, forming visually striking patterns. This is often seen in gray walnut, red bean tree, and iron knife wood.
Parabolic markings occur due to a rapid transition between early and late wood, leading to variations in density. On the cross-section, this results in a smooth, parabola-like shape, which is typical in ash, eucalyptus, and other similar species.
Diagonal flower conical markings are achieved through rotary cutting at an angle (such as 45 degrees), creating a beautiful, swirling pattern on the board surface. This technique is widely used in black walnut and is well-known internationally.
Color stripe markings refer to unevenly distributed color patterns in the wood, often resulting from pigments and lignin. These stripes can be seen in walnut (with dark brown heartwood and purple streaks), citron (purple heartwood), and scented rosewood (red heartwood with black stripes). The patterns are formed by slicing the log in specific ways to highlight the color variations.
Understanding these wood grain patterns helps in selecting the right material for furniture, flooring, and decorative applications. Each pattern adds a unique aesthetic value, making the wood not just functional but also visually appealing.
Non-tapping screws are machine Screw, the pieceworker to be fastened must be tapped with taps in the screw hole in advance to match the screw threads.
The difference between tooth screws and other screws depends on whether they can be used together with nuts. Tooth screws can be used with nuts. And relative to the screws of other teeth, there are self-tapping screws. The nut of this kind of screw has no bow teeth. As for the standard teeth and fine teeth are only different pitch, it is the nut of the machine screw
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