Kunyangwe isu tese tichiziva kusapisa zvidhinha muchina mold, vanhu vazhinji havazive magadzirirwo emhando iyi yekuumbwa. Rega ndikuzivise. Chekutanga, kune akawanda marudzi ezvidhina muchina mold, senge hollow zvidhinha mold, standard yezvidhinha mold, color zvidhinha mold uye heterosexual mold. Kubva pakuona kwezvinhu, kune marudzi matatu. Yokutanga iforoma yakagadzirwa nesimbiwo zvayo, iyo inokamurwa kuva mold yapamusoro uye yakaderera, Yechipiri inoumbwa neNo. Chechitatu i zinc carbon mold, iyo yakaenzana neNo. 65 manganese simbi. Iyo yakakwira iyo manganese label iri, ndiko kuomarara kwesimba rinodzivirira kupfeka, asi zviri nyore zvakare kuve brittle. Ichi ndicho chikonzero mold inowanzova mumamiriro ezvinhu akanaka apo manganese inongova 65. Hazvina mhosva kuti iyo label ikakwirira sei, ine simba, asi iri nyore kuputsika. Kana iyo label yakaderera, haina simba uye haina kupfeka-inodzivirira. Iyi ipfupi sumo yekuumbwa.