Best way to get rust off of anything is Coca-cola.

But it can be sanded out with a very fine grit paper.<br><br>As for how it should be sharpened, I tell them do it like a cleaver but a little stouter (and before I'm asked, yes there is a 10" machete in my kitchen), and I use a kitchen steel to keep it edged. I find that works best for me, but others might have different theories.<br><br>