The blade size (blade holder scale) should be adjusted based on the thickness and hardness of the film material.
Thicker or harder materials require a higher blade size, while thinner films can use a lower setting.
The default blade size is 5, which works for most standard screen protector materials.
Below are the recommended blade size settings for different film types:
| Film Type | Recommended Blade Size |
|---|---|
| Back Film | 4 |
| HD Clear / Matte / Anti Blue-ray | 5 |
| UV / Privacy Screen Protector sheets | 6 |
| Explosion-proof (Thick) Material | 7～8 |