√ masitayelo owongoka ndiye cholembera chosavuta komanso chogwiritsidwa ntchito pafupipafupi, ndipo gwiritsani ntchito zinthu zosavuta zomwe mungalumikizane nazo mwachindunji.
√ Masitayilo a nyenyezi ndi masinthidwe a nsonga angapo okhala ndi masitayelo okhazikika, ndipo amafunsira malo ndi mabowo omwe mungagwirizane nawo mwachindunji.Kusinthaku kumapereka kusinthasintha, kupangitsa kuti nsongayo ilumikizane ndi zinthu zosiyanasiyana popanda kusintha cholembera.
√ Silinda ya cylinder imapangidwa kuchokera ku tungsten carbide, ruby ndi ceramic, ndikuyika zitsulo zoyezera, zida zopanikizidwa ndi zoonda ngati kukhudzana koyenera sikungatsimikizidwe ndi masitaelo a mpira.Kuphatikiza apo, zinthu zosiyanasiyana za ulusi zitha kufufuzidwa komanso malo omwe mabowo ojambulidwa ali.
√ Chalk ndi othandiza posintha magawo a probe kuti agwirizane ndi ntchito zinazake zoyezera.Qidu imapereka zida zingapo, zomwe zalembedwa m'mabuku athu.