
Ichi ndi Deep Hole Honing Tool (yomwe imadziwikanso kuti Mandrel Honing Tool), chida chomalizitsa molondola chomwe chimapangidwira kukonzanso mkati mwa maenje akuya okhala ndi kuzama kwakukulu mpaka m'mimba mwake. Ndikoyenera kukwaniritsa malo osalala kwambiri komanso kulolerana kolimba m'mafakitale monga zamlengalenga, ma hydraulics, ndi kupanga nkhungu.
The Floating Pad (yomwe imadziwikanso kuti Floating Guide Pad) ndi gawo lofunikira pakuwongolera zida zoboola zakuya (makamaka BTA ndi machitidwe a Ejector). Mosiyana ndi matani okhazikika, zoyandama zoyandama zimagwiritsa ntchito makina odzaza masika kapena ma hydraulic kuti azilumikizana pafupipafupi ndi khoma la borehole. "Kuyandama" kumeneku kumathandizira kupatuka kwa zida, kuwonetsetsa kuwongoka kwapamwamba komanso kutha kwapamwamba pamakina akuya.
Deep Hole Boring Tube ndiye gawo lalikulu la BTA (Boring and Trepanning Association) makina obowola mabowo akuya. Amapangidwa kuti azipanga bwino kwambiri mabowo akuya okhala ndi chiŵerengero chakuya mpaka m'mimba mwake (D: d) ≥ 10: 1, amagwiritsidwa ntchito kwambiri m'mafakitale oyendetsa ndege, mphamvu, ndi magalimoto. Imagwirizana ndi Single Tube (STS) ndi Double Tube (DTS/Ejector), pogwiritsa ntchito makina oziziritsa kupanikizika kwambiri komanso okhazikika kuti zitsimikizire kutuluka kokhazikika kwa chip.