Prefabricated raw materials (concrete, silica gel, plaster, etc.), molds, release agent(for Plastic Molds only),gloves, goggles, scales, mixing tools, support, operating instructions, etc.

These will be better to help you complete the project.

1. Calculate the weight of water needed to fill the mold.
For example: A planter mold weighs 1000 grams, and the total weight when filled with water is 2000 grams. Therefore, the weight of water needed is 2000 grams (total weight) – 1000 grams (mold weight) = 1000 grams (water weight).

2. Calculate the weight of cement required.
The density ratio of water to concrete is 1:1.88. Therefore, the amount of cement needed is: 1000g x 1.88 = 1880g

3. Calculate the weight of water needed for mixing the concrete.
Cement weight x 25% = 1880 x 25% = 470g

Therefore, the amount of cement needed to cast this concrete planter pot is 1880g, and the amount of water needed is 470g.

Usually we often talk that the mold release agent is mainly used in plastic(ABS, PP) molds. Before pouring, it should be applied on the inner wall of the mold first. The advantage is that it is convenient to demould after the prefabrication is completed.

Molds made of other materials, such as silicone molds, are not suitable.

Concrete needs to be mixed, so you must control the ratio of various raw materials. During the pouring process, the construction should be done slowly and at a constant speed. When necessary, a vibrating table or a vibrating rod is required to remove the air bubbles in the concrete. After completion, wait for the concrete to solidify and form, depending on the temperature or environment, ordinary concrete takes 24-48 hours. 

If you are using a special type of quick-setting cement, please refer to its specific demolding time specifications (for example, some types can be demolded after 4 hours).

For the demoulding of large-sized concrete blocks, you can use a rubber hammer to lightly hit all angles of the mold, and the finished product will fall off naturally-provided that the mold release agent has been applied to the inner wall of the mould.

After the finished concrete is demoulded, its strength is not fully hardened, so it must be placed in a ventilated place to dry naturally (it takes about 12-24 hours). Note: Prohibit sun exposure and rain.