Rero, tuzakenera gum nto (amafoto):
1. Hitamo amabara atatu murubanza rwanjye - ni umutuku, umuhondo n'umukara.
2. Fata amakara ya mbere hanyuma ubishyireho, urekura umunani, kurupapuro n'intoki zo hagati.
3. Fungura izindi gum 2, Ntugacogora (Mfite umuhondo n'umukara)
4. Kuzamura impera imwe yo hepfo, unyuze mu rutoki, hanyuma uwa kabiri.
Igomba kumanika kurindi matsinda ya rubber:
5. Noneho twambara imwe itukura kandi tuzamura impera yamashusho yo hepfo,
irashobora kuzamurwa gusa mugihe uri ku ntoki 3 gum.
Turakomeza kuboha kugeza igikopo gihinduka ubunini bwifuzwa.
Noneho uzamure imirongo yose ya rubber unyuze mu ntoki zawe (ibyo byose 2) usibye ibya nyuma.
Irakurwaho yitonze kandi ihambire irindi ngimbi rya rubber.
Byose biriteguye.
Isoko