Just curious how long my consumables should last. I know its a vague question but im just looking for a ballpark number. Seems like im going through consumables faster than I should (or maybe just faster than Id like!).
For reference Im cutting .250 mild steel plate running 65 ipm and the average cut time for a whole sheet is about an hour. Also on small inside cuts(bolt holes) im running at 35ipm to keep the taper down. Any input on this will be appreciated.

Also when the electrode needs to be replaced should I be replacing the nozzle as well or does it last longer? Currently I am replacing both at the same time, just wondering if Im wasting nozzles.