Kuri iryo somo hamwe n'abana, bakoze igiti kiva mu masaro, ingumba yari yuzuyeho plaster, amazi, amazi - ku bukode bw'imyeke. Abana baracyamenyesheje guhoraho, byuzuye iyi gypsum ko badakeneye kurenza 10% yivanga ku musazi wabo. Gypsum yatunganije vuba, ni ngombwa rero guhangayikihishwa byihutirwa aho ibisigisigi. Icupa ryarahindutse ku ntoki, ryumishijwe na plaster, muri plaster nshya byarikenerwa kole na destor - umunyu, amasaro, uruhinja rwamabara ... ariko kugeza ubu, Gypsum yari akonje -
Bashushanyijeho ibara ry'amazi risanzwe mu bururu, ibara ry'umuyugubwe, ibara ry'umuraba w'inyanja, hanyuma umunyu, amasaro na clank byari bimaze gufatira kuri PVA, irangi rito rya feza. -
Imiterere yari ishimishije cyane.
Birashoboka, bizakenerwa gusubiramo igice cyo hejuru, hanyuma iyi magarama idafite akamaro.