Pencil Hardness Test Tutorial

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The pencil hardness test, also referred to as the Wolff-Wilborn test, uses the varying hardness values of graphite pencils to evaluate a coating’s hardness.
In this video, learn how to prepare and use the Elcometer range of pencil hardness testers.

[@joaojuniorpazolinijj2941]

Em verniz UV para linha moveleira, o correto é começar a testar com os lápis de dureza menor aumentando até atingir dureza maior?

[@willowP7]

What is the tool that you used to brush/erase the sample with after you pushed the elcometer on the surface?

[@thamomentum]

I assume it's just a microfiber cloth with isopropyl alcohol, depending on the surface finish. ASTM does not specify a specific I believe for cleaning the trail for inspection

[@ripster9713]

that box costs $400 btw

[@lucapanzeri6446]

La lunghezza della mina non è stata controllata