Serious Question Here..

Yeah, they are, but the research I've done tells me my little 21 gallon compressor won't do the job.
Well all I can say is, be a car guy and get a bigger one. You probably need it anyway. I have two, a 30 gallon portable and a 120 gallon big one behind the shop that I cobbled together from a bare tank years ago. I'm broke as a haint and if I can do it, anybody can.