Training on the composition of granite sink raw materials for free

In this video, for the first time, I have explained in Farsi all the formulas and combinations of raw materials used in granite sinks.
We have used 5 kg of resin and 15 grams of cobalt, which is an accelerator. Finally, we added 14 kg of calcium carbonate powder. In total, we mix these 19 kg of ingredients with a mixer.
Then, if you have applied all the stages of the mold including separators and gel coat on the mold, combine this mixture with some acid that I mentioned in the video and you can easily put it inside the fiberglass mold.
give
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00:17 : Add polyester resin
59:00 : Cobalt and granite sink resin additive
1:10 : Calcium carbonate powder was added to the polyester resin
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