3. How to replace the blade of screen protector cutting machine? 

MYCUT screen protector cutting machine's blade needle is lasting and durable for around 400 cutting times,
screen protector film cutting lines are smooth and flat, without burrs.
After 400 cutting times, how to replace the blade of screen protector cutting machine?
This video will show you the steps:
1. Remove the blade holder from the machine
2. Press the blade holder switch and take out the blade
3. Take out the spare blade and replace it
4. Put it into the machine after replacement
Completed within seconds.