ʻO kakaʻina ʻōʻō keaʻO ia ka mea i hoʻohana nui ʻia i ka hana ʻana i nā paipu kila maʻemaʻe, a ua hana ʻia e nā kaikunāne German Mannesmann i ka makahiki 1883. ʻO ka mīkini kuʻi keʻa e loaʻa i ka mīkini ʻoki ʻelua ʻelua a me ka mīkini ʻekolu ʻōwili kea. ʻO nā hemahema maikaʻi o ka capillary i hoʻopuka ʻia e ke kaʻa ʻana a me ka hou ʻana o ka paipu blank ka mea nui e pili ana i ka pelu i loko, i waho, ka mānoanoa pā ʻole a me nā ʻōpala ʻili o ka capillary.

ʻO ka Capillary infolding: ʻO ka Capillary ka hemahema i hiki ke loaʻa i ka piercing cross-rolling, a pili loa ia i ka hana hou ʻana o ka pahu blank, ka hoʻoponopono ʻana i nā ʻāpana kaʻina hana o ke kuʻi ʻana o ka mīkini piercing pass, a me ka maikaʻi o ka piercing. hoʻopili. ʻO nā mea e pili ana i ka ʻike ʻana o ka capillary: ʻo ka hoʻemi ʻana (ka helu) a me nā manawa hoʻopiʻi ma mua o ke plug; ʻo kekahi ʻo ke ʻano puka; ʻo ke kolu ka maikaʻi o ka ʻili o ka plug.
ʻO ka piko i waho o ka paipu capillary: ʻO ka hapa nui o ka piko o waho o ka paipu capillary ma muli o ka hemahema o ka ʻili o ka paipu blank, ʻo ia kekahi hemahema maikaʻi o ka ʻili i maʻalahi ke hana ʻia ke ʻōwili keʻa a hou ʻia ka pahu pahu. Nā mea e pili ana i ka piʻo ʻana o ka puʻupuʻu i waho: A. ka ʻili o ka paipu a me ka deformation perforation; B. paipu blank ili hemahema; C. perforation mea paahana maikaʻi a me ka hele kino.

ʻAʻohe mānoanoa o ka paia capillary: Aia ka mānoanoa o ka paia transverse a me ka mānoanoa o ka paia longitudinal. I ka wā e kaʻa ai a hou aku, ʻike ʻole ʻia ka mānoanoa o ka paia transverse. ʻO nā kumu nui e pili ana i ka mānoanoa o ka paia transverse ʻole o ka pahu capillary: ʻo ka mahana wela o ka pahu blank, ke kikowaena o ka hopena o ka paipu, ka hoʻoponopono ʻana i ke kumu puka o ka mīkini piercing a me ke ʻano o ka mea hana, etc.

ʻAʻole ʻoi aku ka koʻikoʻi o nā koi no ka maikaʻi o ka ʻili o nā paipu capillary perforated e like me nā wili paipu a me nā wili nui no ka maikaʻi o ka ʻili o ka paipu kila, e hoʻopilikia pū ka ʻili ʻili o nā paipu capillary i ka maikaʻi o ka ili o nā paipu kila. ʻO nā mea e pili ana i ka ʻili ʻana o ka ʻili o ka paipu capillary: ʻo ka mea nui, no ka mea, ʻo ka ʻili o ka mea hana perforating a i ʻole ka papa ʻaina puka o ka mīkini paʻi ʻana, ʻaʻole i ʻōwili ʻia ka papa ʻaina. I mea e pale aku ai i ka ili o ka capillary mai ka hakihaki ia e na hemahema o ka ili o ka mea hana perforating, pono e hooikaika i ka nana ana a me ka wili ana i ka mea hana perforating (guide cylinder and trough).