1. Pono e paʻa a hilinaʻi ka wili, a ʻo ka solder ma ka ʻaoʻao o waho o nā ʻāpana e hoʻopiha ʻia ma kahi, me ka waiho ʻole ʻana i nā āpau.
2. Pono ka humuhumu wiliwili e maʻemaʻe a me ka ʻaʻahu, a ʻaʻole ʻae ʻia nā hemahema e like me nā māwae, nā ʻoki lalo, nā āpau, ke ahi, a me nā mea ʻē aʻe.ʻAʻole pono nā hemahema e like me ka slag inclusions, pores, weld bumps, lua, etc. ma ka ʻaoʻao o waho, a ʻaʻole maopopo ka ʻili o loko.
 
3. Pono e hoʻomaʻemaʻe ʻia ka ʻili o nā ʻāpana ma hope o ke kuʻi ʻana, a ʻo ka waiwai o ka roughness ʻili he 12.5.No nā ʻili hoʻoheheʻe i ka mokulele hoʻokahi, ʻaʻole pono e ʻike ʻia nā protrusions a me nā puʻuwai ma ka ʻili ma hope o ka mālama ʻana.
4 Pono ka hana wiliwili e hoʻokumu i kahi kaʻina hana e hoʻopau i ke koʻikoʻi wili e like me ka hiki.Pono nā mea hana i ka wā wili a ʻaʻole ʻae ʻia ka deformation o nā ʻāpana ma muli o ka welding.Inā pono, pono e hoʻoponopono ʻia ka mea hana ma hope o ke kuʻi ʻana.E hōʻuluʻulu e like me nā koi o nā kaha kiʻi, a ʻaʻole ʻae ʻia ka nalo, hewa, a i ʻole ke kūlana pololei.
5. I mea e pale ai i ka ʻike ʻia ʻana o nā pores welding, pono e hoʻomaʻemaʻe ʻia nā ʻāpana welding inā he ʻōpala, ʻaila hinu, etc.

6. I mea e hoʻomalu pono ai ke kinoea argon i ka wai wiliwili a hoʻomaʻamaʻa i ka hana kuʻi ʻana, ʻo ke kikowaena o ka electrode tungsten a me ka mea hana welding e mālama mau i kahi kihi o 80 ~ 85 °.ʻO ka huina ma waena o ka uea hoʻopiha a me ka ʻili o ka mea hana e liʻiliʻi e like me ka hiki, ma kahi o 10 °.
7. He kūpono kūpono no ka hoʻopili ʻana i nā papa lahilahi ma lalo o 6mm, me nā hiʻohiʻona o ke ʻano wili wili nani a me ka deformation wili liʻiliʻi.