Yep! They are very air thirsty. I run a Hydrovane that gives 11cfm FAD continuously and a 300l air bank and when cutting it runs most of the time.May I ask what size compressor you are using? I want to get a Cut 50 to cut up 10mm EN8 plate but I only have a 2hp, 7.5cfm 24litre compressor. It's incredibly noisy so I don't want it to run all the time. Should I budget for a larger compressor or at least a bigger reservoir?