Izici zenqubo:Uzakwethu, isakhiwo esiyisithupha. Inqubo yokukhiqiza ye-self-hardening sand ku-in-line yamukelwa ukuhlanganisa i-core ku-in-line, ukubeka i-core nokuthela. Izinto ezithunyelwe zithelwa ngenqubo yokuthela eyi-horizontal. Uhlelo lokuthela lwakhelwe ngokuya ngomqondo wokugeleza okukhulu kanye nezinga lokugeleza eliphansi, ukuze kuthuthukiswe amandla okususa udoti futhi kuqinisekiswe izinga lokulawulwa kweziphambeko zamagobolondo namagobolondo esihlabathini ezintweni ezithunyelwe.