Sharpening stone for hedge trimmers - Wet stone vs. Dry

Hey Guys,

I just bought a dremel and just used it for sharpening my hedge trimmer with the cone shaped sharpening stone attachment. I ran the dremel with the stone dry, without applying any water.

- Would it be more beneficial to wet the stone?

- What does sharpening with a wet stone do that a dry one does not?

I am new to this sharpening technique so would appreciate all advice and feedback.

Thanks guys!