1. Take A and B according to the proportion of standard stirring, and then put into a vacuum pump vacuum bubble, the general operation time is about 10-15 minutes.
2. After casting, heat to 60 °C for 2-3 hours, cool, solidify and remove. If the temperature is 120 ° only 10 minutes can be formed.
3. Before use, please take a small amount of experiment to master its operation skills and avoid waste.