Yintoni uvavanyo lokusika?

Uvavanyo lokusika unqumlwe ngokubanzi luvavanyo ngokubanzi lokuchaza ububi bokuthinta okanye ukuprinta kwisifundo.

Inokwahlulwa ibe ngamanqanaba ama-5 ama-ASTM, inqanaba eliphezulu, i-sticreter yeemfuno. Kwiglasi ngesilika esishicilelayo okanye ukubhatala, ihlala ikwinqanaba le-4b ngendawo evuthayo <5%.

Ngaba uyazi ukuba uyisebenzisa njani?

-Lungisa ibhokisi yovavanyo lokusika
-Bable ububanzi obuyi-1cm-2cm ene-1mm-ithutyana le-1.2mm kwindawo yovavanyo, iigridi ezili-10 zizonke
-Coca indawo enqumlayo ngebrashi kuqala
- Faka isicelo se-3m ebonakalayo ukuze ubone ukuba kukho nayiphi na i-caince / ipeyinti yayiyi-peel
- Thelekisa nomgangatho wokuchaza isidanga sayo

Iglasi yeglasiIhlala izabalazela ukuba liqabane lakho elinokuthenjwa kwaye sikuyekelele ukuba uziva iinkonzo ezongezwe.