ʻO ka mold base ka huahana semi-finished o ka mold, i haku ʻia me nā mea ʻokoʻa pā kila. Hiki ke ʻōlelo ʻia ʻo ia ka iwi o ka ʻōpala holoʻokoʻa.
No ka mea, he ʻokoʻa nā ʻano kumu hoʻoheheʻe make-casting ʻokoʻa i nā ʻano like ʻole, ʻokoʻa hoʻi kā lākou noi.
ʻO ka "mea maʻamau" ma ka inoa o ka base mold non-standard, ʻo ia hoʻi, ʻaʻole maʻamau, a ua hōʻike ʻia kēia maʻamau ma nā ʻano he nui o ka mold base.
ʻO ke kumu hoʻoheheʻe pololei he mea hana i hana i nā mea. Hoʻokumu ʻia kēia mea hana i nā ʻāpana like ʻole, a ʻo nā kumu hoʻoheheʻe pololei ʻokoʻa i haku ʻia i nā ʻāpana like ʻole.
Pono e hoʻopaʻa ʻia nā ʻōkuhi a pau. No ke kumu mold o ka mold hoʻokahi, pono ke ʻano o ka chamfer e ʻaʻahu. ʻO ka chamfer he 45%. ʻO ka nui o nā puka āpau ma ka template maʻamau (0.5 ~ 1mm)X45°.
I ka wā o ka hoʻoheheʻe ʻana ʻO ka mālama wela kūpono ʻole e alakaʻi i ka mold cracking a me ka scrapping premature, ʻoiai inā hoʻohana wale ʻia ke kinai ʻana a me ka hoʻoheheʻe ʻana, me ka ʻole o ke kinai ʻana, a laila ke kaʻina hana nitriding i luna, e hiki mai ana ka māhā a me ka māhā ʻana ma hope o nā tausani o nā manawa make-casting.
