Ngoku, kukho iindlela ezininzi ezahlukeneyo zokucoca izitya zeglasi kwilebhu, ukuhlamba ngezandla, ukuhlamba nge-ultrasonic, umatshini wokuhlamba ozenzekelayo, kunye nomatshini wokuhlamba weglasi ozenzekelayo. Nangona kunjalo, ukucoceka kokucoca kusoloko kumisela ukuchaneka kovavanyo olulandelayo okanye impumelelo yovavanyo. Umhleli ushwankathela izinto ezininzi eziphambili ezichaphazela ukucoca, aze azishwankathele zibe ngamanqaku amahlanu e-CTWMT:

C: iKhemistri
Ngokwenjongo yezinto zokucoca, khetha izinto ezahlukeneyo zesepha

T: Ubushushu 
Ngokubanzi, ubushushu bokuhlamba obuphezulu buya kuba nefuthe elingcono lokuhlamba

W: Umgangatho wamanzi
Amanzi yeyona ndlela iphambili yokucoca, kodwa umgangatho wamanzi uyahluka kwiindawo ezahlukeneyo, ngoko ke isiphumo sokucoca asinakuqinisekiswa kakuhle.

M: Amandla oomatshini
Intsalela isuswa kumphezulu wenqanawa ngamandla angaphandle

T: Ixesha
Zonke ezinye izinto xa zilingana, ngokubanzi, ixesha elide lokucoca, ziya kuba nefuthe elingcono lokucoca.

Umgaqo wokuhlamba iiglasi ngokuzenzekelayo: ukufudumeza amanzi, kongezwe isepha ekhethekileyo ngepompo yokujikeleza ukuya kwipayipi yeebhasikithi zobungcali enoxinzelelo oluphantsi kunye nokujikeleza okuphezulu ukuhlamba umphezulu weglasi yangaphakathi, Iingalo zokutshiza eziphezulu nezisezantsi zicoca umphezulu wangaphandle weglasi. Ngexesha lokucoca ngokwesayensi kunye namanyathelo, ukuze kufezekiswe injongo yokucoca iiglasi.