調配比例是石膏粉的使用技巧比較重要的環節：模具石膏粉調配比例為 28(水)：100（石膏粉），這個混合比是混合比，制作出的石膏產品可以達到瓷磚的效果，表面用指甲根本劃不出痕跡。但按照這種混合比調配石膏粉，對新手而言難度太大，混合比例的精確掌握、選用的攪拌容器、攪拌手法、凝固時間都不好控制。故一般建議采用35：100的比例調配石膏粉，也可以達到很不錯的效果。

　　The mixing proportion is an important part of the use skill of gypsum powder: the mixing proportion of mold gypsum powder is 28 (water): 100 (gypsum powder), which is the highest mixing ratio. The gypsum product can achieve the effect of ceramic tile, and the surface can not be scratched with nails. But according to this mixing ratio, it is too difficult for the novice to prepare gypsum powder. The accurate control of mixing ratio, the selected mixing container, mixing technique and setting time are not easy to control. Therefore, it is generally recommended to use the proportion of 35:100 to mix gypsum powder, which can also achieve very good results.

　　調配石膏粉次序：先加水后加石膏粉，切記這點很重要，先粉后水石膏粉很難攪拌到非常均勻，石膏的硬度與攪拌的均勻程度是成正比的，攪拌越均勻，牢度越高。

　　Mixing order of gypsum powder: add water first and then gypsum powder. It is very important to remember this point. It is difficult to mix gypsum powder first and then gypsum powder. The hardness of gypsum is directly proportional to the uniformity of mixing. The more uniform the mixing, the higher the fastness.

　　凝固時間的掌握：凝固時間主要與加水量有關系（添加劑另外說明），次之與攪拌時間、澆鑄容器、溫度、濕度有關系。首先水、石膏粉混合比，水越多石膏凝結時間越長，石膏密度越低、牢度越低，水越少凝結時間越短、密度越大、牢度越高，具體需根據使用需求來控制。然后談下攪拌時間，一般而言攪拌到石膏粉非常均勻即可澆鑄，一般控制在5分鐘之內，攪拌時間越長，石膏粉凝固時間越快。

　　Control of setting time: the setting time is mainly related to the amount of water added (the additives are also explained), and then to the mixing time, casting container, temperature and humidity. First of all, the mixing ratio of water and gypsum powder, the more water, the longer the setting time of gypsum, the lower the density and the lower the fastness of gypsum, the shorter the setting time of less water, the higher the density and the higher the fastness, which should be controlled according to the use demand. Then talk about the mixing time. Generally speaking, the gypsum powder can be cast when it is stirred to be very uniform. Generally, it is controlled within 5 minutes. The longer the mixing time is, the faster the setting time of gypsum powder is.