If they were to have sufficient strength, they had to be cut where the trunk divided and the grain of the wood curved, otherwise the knee would split.
Ukuba zazinamandla aneleyo, kwakuzakufuneka zinqunyulwe apho umzimba wayo wahlulwa khona kunye nomlinganiselo engowona umncinane wengophe le planga, ngapho koko i-odolo eli lalizakwahlukana.