Plasma cutting is hired by amperage, not by brand. A 45 amp portable unit severs steel near half an inch and rents for roughly $60 to $110 a day; a 100 amp machine that cuts an inch of plate is a different tier and often wants a heavier supply or a generator standing beside it. Torch consumables are yours to replace.
Amperage is the spec that decides everything
Counters list plasma cutters by output amps because that is what sets cut capacity. Around 45 amps gives a clean quarter inch and severs close to half. At 65 amps you are into three eighths clean and thicker severing. Above that you are hiring a shop machine, and the yard will ask about your incoming power before it loads one.
Power at the point of work
Most portable units want 240 volt single phase at 30 to 50 amps, which a site panel may not have spare. Yards will hire a generator alongside, sized with headroom rather than to the nameplate, because the arc draws hard on strike. Ask whether the unit is dual voltage before you plan the drop and the cable run.
Consumables and clean air are not in the rate
The electrode and nozzle inside the torch wear out, and the yard bills what you use or expects the used tips back. Dry air matters more than sheer volume: moisture in the line shortens tip life and leaves a rough kerf. Running off a site compressor means putting a filter and a dryer between it and the machine.
Fume control belongs in the plan
Cutting galvanised, painted or coated steel puts metal fume into the air, and enclosed work needs ventilation or extraction rather than a fan aimed at the operator's back. The federal construction limits on air contaminants cover that exposure. Position the cut so the plume travels away from the person holding the torch.
Questions people ask about plasma cutter rental
Do rental yards stock plasma cutters?
General rental centers and tool counters usually do, in the portable inverter sizes. Machinery yards that mostly hire earthmoving may not. Call before driving, and ask which amperage they hold, because one branch of a chain often carries a unit the next branch does not.
What thickness will a rented plasma cutter handle?
Read the rated clean cut, not the sever rating. A machine that severs three quarters of an inch may only leave a tidy edge at three eighths. If you need a weld ready edge, hire one size up rather than pushing the smaller unit all afternoon.
Is a plasma cutter cheaper by the week?
Yes, in the same way every line on the counter is. A week is normally priced near three or four day rates, so a two or three day job is worth pricing both ways. Consumables are billed separately whichever term you take.