Ibi bikoresho bikomeye byicyuma biranga burr yubusa, inama zikarishye kuburyo amaguru agenda neza atagabanije ibiti kandi bigakorwa numutwe wasubiwemo kugirango urinde amakoti ya kabili.Mubyukuri amavuta adafite amavuta yo gukora isuku kandi yakozwe mubashoramari bahisemo uburebure.Yagenewe gutwarwa mu giti n'inyundo.
Uburebure bw'imisumari bwatoranijwe bugomba kuba inshuro 2,5 kugeza kuri 3 z'ubugari bw'igice cy'akazi kugirango imisumari.Kugirango wongere umurongo uhuza, hagomba kubaho ANGLE mugihe utera imisumari, ugakora ubwoko bwa dovetail oblique imisumari, bikavamo ingaruka zifatika.Ipfundikizo yimisumari yimbaho, igomba kubanza kubona igana kumpera ndende, kugirango igabanye igabanywa ryibiti, umusumari wibiti, igomba gucukurwa umwobo wambere wimisumari, aperture igomba kuba nto gato kurenza diameter.Nibura imisumari ibiri isanzwe igomba kuba inyundo kuri buri buso buhuriweho kugirango barebe ko ingingo ikomeye.