Quick Answer
Use the Mineshima Titan Coating Diamond File for efficient material removal on plastic and metal parts, but always file in one direction and clean the file after each session to maintain its cutting performance.
Why the Titanium Coating Matters
The titanium coating on this file set increases surface hardness and rust resistance. That means the file stays sharper longer and can handle etched metal parts without dulling quickly.
This makes the H-20 a versatile tool for both plastic model kits and metal detailing, but the coating is not indestructible—avoid dropping it or dragging it across hard surfaces.
Trade-Off: Grit #400 Limitations
With a grit equivalent to #400, this file is effective for rough finishing on plastic and final finishing on metal. However, it is not a polishing tool—for a mirror finish on plastic, you'll need finer grits or sandpaper.
If you need to remove large amounts of material quickly, a coarser file (like #200) would be faster, but the #400 grit gives a smoother result with less clean-up.
Diagnosis: Common Filing Problems and Fixes
- Symptom: File glides without cutting: Cause: The file is clogged with plastic or metal debris. Clean it with a soft brush or compressed air, and file in one direction rather than back-and-forth to reduce clogging.
- Symptom: Rust spots appear: Cause: Moisture left on the file after use. Dry the file thoroughly and store it in a dry place. The titanium coating resists rust, but it is not immune. After cleaning, apply a light coat of oil to protect the cutting edges.
- Symptom: File becomes dull or bent: Cause: Dropping the file or using excessive pressure. If the file is bent or chipped, stop using it—it can damage your parts. Replace it with a new file. If you need finer finishing, consider a higher-grit file or sandpaper instead.
Product Facts
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Mineshima Titan Coating Diamond File 3pcs H-20: The set includes three shapes: flat, half-round, and round. These shapes let you file flat surfaces, curves, and inside corners without switching tools.
Mineshima Titan Coating Diamond File 3pcs H-20