How can we clean the stains on the plaster mold?
Gypsum line mold is too long, or if it is not noticed in the process of storage, it will smear stains. The star gypsum line can be processed according to the situation.
For a small piece of dirt, it can scrape the thin layer on the surface lightly with a small knife. If ink stains are stained and deeper, it is necessary to dig out the ink spots and then mix them together.
Plaster fill it up, wait to dry, flat with fine sand paper. The plaster of the filling will be incompatible with the hue of the plaster mold, and it will affect the beauty. In this case, it will be possible.
Go over the whole statue.
Method to add water plaster is: put 50 grams of lime stir in 1500 ml of water, then the gypsum products soak for 3~10 minutes, and then removed, washed with water 2~5 times and dried, the most
Then sprinkle with chalk powder, and the plaster will be as white as before.
If the gypsum line traces for many years, very dirty mold, cannot use the method for processing. Plaster mold can be immersed in 1000 milliliters of soapy water plus 10~30 ml of ammonia water
In the water, wash gently for about 20 minutes and remove it with clean water. If it's really dirty, you can't clean it with this method, and you can put a layer on the plaster mold.
The color of copper, which is made into a bronze statue, is more elegant.