Li-blades tse ngata tsa selikalikoe li hloka ho kenngoa ts'ebetsong ea phekolo ea mocheso moo thepa ea 'mele ea tšepe e fetoloang ho etsa hore thepa e be thata le ho etsa hore thepa e khone ho mamella matla a hlahisoang nakong ea ho itšeha. Thepa e futhumatsoa pakeng tsa 860 ° C le 1100 ° C, ho itšetlehile ka mofuta oa thepa, ebe e pholile ka potlako (e tima). Mokhoa ona o tsejoa e le ho thatafatsa. Ka mor'a ho thatafala, lisakha li hloka ho halefa ka har'a lipakete ho fokotsa boima le ho eketsa ho tiea ha lehare. Mona li-blades li tlanngoe ka har'a lipakete ebe li futhumatsoa butle ho ea lipakeng tsa 350°C le 560°C, ho ipapisitsoe le lintho tse bonahalang, ebe li pholisoe butle ho mocheso o tikolohong.