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8'' inch Diamond Coated File Half Round Style Grit 120 Needle Board File for Grinding on Glass, Stone, Ceramic, Marble, Rock, Bone

4.3 (13) Write Review
Free shipping on orders over $29.99

$9.28

$ 4 .99 $4.99

In Stock

1.Size:1pcs-half Round


About this item

  • Many times harder and cuts 10x faster than conventional files. Diamond alloy files are made of high-strength diamond and high-quality substrate electroplating, which are sharp, wear-resistant, high-strength, possess physical properties, strengthen.
  • 290mm overall length with 8" blade. Half round, 120 grit . Plastic handle, horizontal grain design on the surface, non-slip and comfortable. Handle Size: 90 x 18mm / 3.52 x 0.7" (LxD) they fit well in his large hands and are easy to clean.
  • Cuts in all directions with smooth action. Coating : Both sides. Diamond files are most suitable for fine work and can be used for high-speed steel with a hardness of 69.
  • Cuts into welds and hardened surfaces where other files can't. Widely used in various molds, models, parts, handicrafts and other industries, such as: grinding, polishing, engraving, cutting, correction, etc. of jade, ceramics, glass, crystal, metal, cemented carbide and other parts.
  • 1pcs 8 inch half round diamond file


Product Description

Diamond Coated File

Diamond files are mainly used for repairing and polishing hard steel, jade, stone, ceramics, metal, and glass.


Diamond Coated File

  • Plastic handle, horizontal grain design on the surface, non-slip and comfortable
  • Handle Size: 90 x 18mm / 3.52 x 0.7" (LxD) they fit well in his large hands and are easy to clean
  • Applies to: Commonly applied to metal, woodworking, arts and crafts and glass and marble work

  • It is suitable for detail trimming, deburring, chamfering, grinding and polishing of high-hardness metals, jade, ceramics, glass and other materials. For example, polishing of super brazing scars, polishing of ceramic tiles, glass polishing, and jade polishing.
  • Cuts into welds and hardened surfaces where other files can't
  • Electroplated diamond, good overall surface finish, fine sand
  • High hardness/durable/not easy to wear
  • Material : Metal and Plastic
  • Color: Silver + Red (Handle)
  • Handle Size: 90 x 18mm / 3.52 x 0.7" (LxD)
  • Half Round File Length: 200mm / 8" (not include the handle)
  • Type: Half Round

Diamond alloy files are made of high-strength diamond and high-quality substrate electroplating

Diamond alloy files are made of high-strength diamond and high-quality substrate electroplating

Large Diamond Hand File Sharpening Tools, for Grinding Metal Ceramic Glass Stone Jewelry Jade Steel

Needle Files Tools Mixed Style Set for Metal Sanding, Wood, Jewelry, Plastic & Handmade

File Usage Rules

Follow the following rules to extend the service life

  1. Do not use a file to frustrate the oxide layer of the workpiece, as the hardness of the oxide layer is high and it is easy to damage the teeth of the file. The oxide layer can be polished with a grinding wheel or chiseled off with a chisel.
  2. Use one side of the new file first, then use the other side after this side is blunt.
  3. In the process of using the file, always use a copper wire brush (or wire brush) to brush the debris embedded in the tooth groove along the direction of the tooth pattern of the file. After use, all the debris must be carefully brushed off before storage.
  4. When using a file, the speed should not be too fast, otherwise it is easy to wear prematurely. The best frequency of the file back and forth is 40 times/min. The use length of the file occupies 2/3 of the full length of the tooth surface of the file.
  5. The diamond file can be used with water, but not other liquids such as oil, acid, alkali, etc., which will corrode the diamond file.
  6. Diamond files are widely used for frustrating hard metals, but not for frustrating soft metals, such as aluminum, copper, etc.
  7. Do not use files as other tools, such as knocking, prying, pressing, twisting, pulling, and hitting.
  8. When using files, do not use too much force to avoid breaking or deforming.
  9. When storing files, they must not collide and stack them; the humidity in the storage place must not be too high, and it is required to keep dry and ventilated.

Robin Case
July 29, 2025
I used it to soften the edges of all my little glass mosaic pieces that I had cut after they were glued down and just before grouting..worked great!
kim
June 22, 2025
Perfect diamond coated file used for my glass tile mosaics!!
M.R.
May 28, 2025
180 grit still a little rougher than my worn in one!
Fábio Jungers Junior
May 2, 2025
Boa qualidade
Edward H.
April 29, 2025
Just finished a tile job. Used on a few pieces and did a good job cleaning up mistakes.
Shaner
April 16, 2025
This file has been very helpful - I use it to shape glass for my mosaics. File is hefty and that's good - each file stroke has more impact and I can complete my tasks faster.
VMAN
April 8, 2025
Product has burn marks and machine marks on it. The handle is cheaply made. The sheath is ripped. The edges have no diamond grit (only the flat sides). The metal near the handle has corners so unfinished they could cut you I have not used it at all yet so no comment on how it holds up, but pretty cheaply made even for its cheap price tag....
Quick to ship. The woman loved it!
March 29, 2025
Works great, wears FAST even with barely using pressure.
Real Levesque
March 12, 2025
Filling band saw.
GB
March 7, 2025
Used this file on 1/4" brass / plastic tube and ro file the edges off fairly soft 3D-printed ABS / PETG plastic models. The "diamond" sand kept falling off this file wile I worked on very soft plastic surfaces.After about 15 min of work the file has lost about half of its diamond coating off the flat side.
chapin
February 4, 2025
Diamond coat finished fast and handle came off right from the beginning. Anyway was useful.
Gonzalo Alberto Priego Castillo
January 3, 2025
I bought this file to level up some guitar frets and it did the job. Inexpensive and reliable.
Joanne L.
December 29, 2024
Excellent delivery time. The file is manufactured well. I bought the file for touching up hardened cutting bits that a normal file wouldn’t cut. Cuts through hardened metal easily.