Expert, I have a question – what are the different types of file patterns?

This post was last edited by ylb913 on 2018-8-12 at 16:48. Three patterns? The file I have has double grooves (oblique cross-grooves at about 25 degrees; this is presumably the most traditional style) ； There are striations (on the side of a flat file; this is also considered a type of single-striated file), and striations can also be seen on nail clippers ； Are there any file brushes with patterns, whose surfaces are irregular and bumpy? There are also no real patterns to speak of, but the filing tools for the accessory bags do have their protruding parts arranged in parallel.

The title has been changed; it’s better to be more specific about the issue. –――――――――――――――――– Additional info: File pattern refers to the arrangement of the file teeth, and there are two types: single-tooth pattern and double-tooth pattern. ①Single-direction grooves refer to grooves on a file that exist in only one direction. Suitable for filing soft materials. Single-flute files typically have machined teeth that cut at a positive rake angle; as a result, the strength of these teeth is low. The entire width of the tooth is involved in the cutting process, which makes it difficult for the chips to break apart – they may even be as wide as the file itself. Hence, the cutting resistance is high, requiring significant force for cutting. Therefore, such files are suitable only for filing soft materials or working on narrow surfaces. ②Double tooth patterns refer to tooth patterns on a file that are arranged in two directions. Suitable for filing hard materials. Double tooth patterns are mostly chop-shaped teeth; the ones cut first form the bottom tooth pattern (shallower teeth), while those cut later form the top tooth pattern (deeper teeth). The directions and angles of the surface teeth grooves and the bottom tooth grooves are different; as a result, the teeth formed have an inclined arrangement along the center line of the file. During filing, the scratches left by each tooth intersect rather than overlap, resulting in a relatively smooth filing surface. During filing, the chips are broken into small pieces, which reduces the cutting resistance and makes filing less strenuous. The tooth strength is also high, so double-toothed files are suitable for filing hard materials and working on wide surfaces.

What pattern does the mixed-grit file have? ? ? ?

(1) Fitter files (ordinary files) can be further divided into flat files, semi-circular files, triangular files, square files, round files, etc., depending on the shape of the cross-section of their bare shafts.

But the various protrusions are indeed file-like structures of the supplementary bags arranged in parallel. Lao Yu, what you’re referring to is a carpenter’s file

Are there any file brushes with patterns, those irregularly textured and bumpy ones – diamond file brushes?