When working with plaster products, craftsmen often face a number of problems: "Why is my plaster planter turning yellow?", "Why are there so many small holes (bumps) on my planter?", "Why is the color on the product not distributed evenly?". All these moments can arise in any master. We decided to give you some tips to avoid such defects as much as possible.
1. Why is my gypsum planter turning yellow?
Sometimes, during the burning of the container candle, we notice greasy spots on the gypsum product. Such formations arise due to the absorption of substances from melted wax by gypsum. The visual appearance of such a candle deteriorates. Therefore, to solve this problem, it is necessary to lubricate the planter with a hydrophobic impregnation, varnish or wax after it has completely dried.
2. Why are there so many small holes (bumps) on my planter?
Small defects of bubbles on a plaster product most often occur due to a poorly pressed form and rapid pouring of plaster. Excess air does not have time to escape from the plaster and creates a defect of small holes in the finished product.
We recommend not to quickly fill the form with gypsum mixture and to tap it with vibrating movements.
Another reason for the occurrence of such a defect may be the absence of a modifier in the gypsum mixture. Without it, gypsum sets quickly and can harden quickly without reaching the mold. It is necessary to add a complex modifier. Its amount is 2% of the mass of gypsum.
3. Why did the color on the product not spread evenly?
When creating a colored gypsum planter, you must choose a good dye. Sometimes, due to low-quality materials, the color of the gypsum product may not correspond to the desired color, which spoils its aesthetic appearance. This defect can also be caused by a poorly mixed gypsum mixture, or a poorly mixed dye before adding to the mixture. Therefore, be sure to pay attention to the composition and control the mixing process.
