Better make sure of your rpm's before you use a bench grinder. You should have 5,000 for aluminums and 8,000 for carbons. Most bench grinders are nowhere near that speed so it is not so easy to burn the tinseling out of mower blades and such; topping out around 3,500 or so. Yeah, you can probably get buy with it for aluminums, but it will probably ruin the fibers on carbons. Most likely even to the point you can't see it (inside the shaft) and you have a carbon arrow split on release on you. Not a very safe idea... At least the HF saw gets up to around 7,800 rpm.