is it remote from the reaction chamber? i.e. if people have to go in to wipe/re-coat stuff, it takes longer to do it safely, but it's cheaper/faster if you can

is it remote from the reaction chamber? i.e. if people have to go in to wipe/re-coat stuff, it takes longer to do it safely, but it's cheaper/faster if you can get a machine to do it with the people controlling it from a distance. still, doesn't seem terribly hard, when surgery has been done with remote controlled robots.