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By pressurise, do you mean having to compress the air?

Ehn.. Will he apply pressure from top for movement on the hammer on the bit? Abi it's just to direct it?

the only thing the operator does is to hold the tool in position and press the switch to "start" the tool. https://m.youtube.com/watch?v=Cm3o8-G5IuI

Nice.. Someone like me would still get tired easily though.

i know p:)

You know? Are u saying I'm Lazy?