Pono ka ʻili metala e laumania a ʻaʻole e ʻānai ʻia e ka popo. ʻAʻole pono e ʻūlū a hemo paha ka uhi ʻana. ʻAʻole pono e ʻaʻahu ʻole ka ʻili plastik, ʻino a i ʻole he mau māwae a hōʻino paha. Pono ka pale ʻana o nā ʻāpana like ʻole e hoʻokele ana i ka uila e halihali i ka hana o ka volta hoʻokolohua a ma laila.
ʻaʻohe punctures ma luna.
E uhi ʻia ka 90% o ka ʻili e ka solder. Me ka ʻole o ka deformation o ke kumu,
hiki ke hoʻokō i ka hana mechanical, electronic. Hana me ke ālai ʻole
hanana, ʻae ka pihi i ka ʻili komo