How to use gypsum powder to make china ware gypsum mold?

Natural Gypsum Powder is an important material for making pottery. As premium gypsum for specialist which is necessary to the ceramic ware and hygienic pottery, it's a high performance product for making variety of products from general purpose to case molds. As gypsum for high performance pottery which is developed for heightening efficiency of large scale production and precision from teacups to sanitary ware, quality of product and the degree of completion and precision. Jingmen Jinjiu Gypsum Powder Co., Ltd insists on the highest quality raw materials and has extremely high standards to creat quality Kingstone brand gypsum powder.

Kingstone gypsum powder can be used for these ceramic mold:
1, For Slip Casting Mold
2, For Case Mold
3, For Roller Machine

In these article we will learn how to use gypsum powder to make china ware gypsum mold?
Step 1: Choose the suitable gypsum powder for the gypsum mold. We would recommend Beta gypsum powder with technical data as below:
Features: Low expansion, excellent durability, smooth surface, good water absorption, high strength.

Option 1: Fine Grade Beta Gypsum Powder(for normal china ware/table ware/sanitary ware)
Whiteness: 77~78%
Fineness: 160 mesh 0.8 left
Water to powder ratio: 70%
Initial set time: 6~8 minutes
2H bending strength: 2.8~3.0 Mpa
24H compressive strength: 8.5~9.0 Mpa
Expansion rate: <0.23%

Option 2: Fine Fiber Beta Gypsum Powder(for normal china ware/table ware/sanitary ware and bone china ware)
Whiteness: 90~92%
Fineness: 160 mesh 0.4 left
Water to powder ratio: 75%
Initial set time: 7~9 minutes
2H bending strength: 3.3~3.5 Mpa
24H compressive strength: 9.5~10.5 Mpa
Expansion rate: <0.23%

Step 2: According to the water to powder ratio, prepare the water in container first, then pour the powder into water uniformly, and then leave along the water and powder to mixed themselves naturally.

Step 3: Stir the water powder paste

Step 4: Pour the paste to the metal mold, please make sure you have put some oil in the side of the metal mold to make sure it is easy to get rid of gypsum mold when the powder get dryed.

Step 5: Waiting for the gypsum mold dry naturally, and then take away the metal mold.