After the mold has been used for a period of time, a large amount of epoxy and release agent remain on the surface, which is very difficult to remove due to long-term curing at high temperature.

Use micro-dust cleaner PTC-HMC06, 60℃, ultrasonic (40KHz, 50W/L), soak and clean for 10 minutes.
The residue was found to have softened slightly and some of the residue had fallen off.

Use micro-dust cleaner PTC-HMC06, 60℃, ultrasonic (40KHz, 50W/L), soak and clean for 20 minutes.
The residue was found to have softened slightly and most of the residue had come off. The mold core has regained its mirror luster.

Use micro-dust cleaner PTC-HMC06, 60℃, ultrasonic (40KHz, 50W/L), soak and clean for 20 minutes. Then use a nylon short-bristled brush to remove. It was found that most of the residue had been removed.

Use micro-dust cleaner PTC-HMC06, 60℃, ultrasonic (40KHz, 50W/L), soak and clean for 30 minutes. Then use a nylon short-bristled brush to remove. It was found that the residue on the mold had been completely removed.