Buy building blocks when you see zero degree mold pulling, in the end what is the meaning of ah ?

Block pieces are injected into the mold to produce molding, molding needs to be pulled out of the mold. In order to facilitate the pulling of the mold, the plastic parts bib in the direction of the mold should have a certain angle of inclination, the higher the precision requirements of the product pulling the mold slope must be smaller. The zero-degree mold pulling refers to the mold pulling slope of 0, the meaning of high precision blocks. ONEBOT blocks and Xiaomi blocks are used in this technology