Hotkey to repeat tool?

Hello,
I want to cut some faces, but if i try that with maya presets (G) or blender (shift+R), nothing happens… Why? God this tilting me extremely.

You’ll have to be more specific. What exactly are you trying to repeat? If you are manually selecting or cutting faces then I doubt any program would allow you to repeat that since it can’t determine which faces you intend to do next.