Kutentha kwapakhoma kocheperako kumachepetsa machubu, kumathandizira kupsinjika, ndikuteteza ku kuwonongeka kwa makina ndi abrasion. Amagwiritsidwa ntchito kwambiri pakutchinjiriza ndi kuteteza zida, ma terminals, zolumikizira mawaya ndi zomangira mawaya, kuyika chizindikiro ndi kuzindikira chitetezo chamakina. Machubu amabwera mosiyanasiyana makulidwe, mitundu, ndi zida. Ikatenthedwa, imachepa kuti igwirizane ndi kukula ndi mawonekedwe a zinthu zomwe zili pansi, zomwe zimapangitsa kuti kuyikako kukhale kosavuta komanso kosavuta. Kutentha kosalekeza kogwira ntchito ndikoyenera Minus 55°C mpaka 125°C. Palinso giredi yanthawi zonse yankhondo yokhala ndi kutentha kwakukulu kogwira ntchito kwa 135°C. 2:1 ndi 3:1 shrink ratio ndi zabwino.