I’ve reconstructed a small, 12X16 perimeter and 15 foot at ridge, original hand hewn log cabin in Saluda NC 28773. circa 1890 never painted or stained
I can’t locate a cob blaster closer than TN and its expressive! which doesn’t not even including the diesel compressor and generator to run it.

I’ve decided that sandblasting will be the type of equipment that I can purchase/rent readily and economically.

My question is…can you please recommend what the minimal PSI and or CFM requi