About 1/3 acre.
Some do.
Not really.
Well, I can do grinding in my garage. I have a grinding/cutting cart that I made out of an old kitchen cabinet, it is on casters and can be taken anywhere. There is a Baldor 1/2 HP grinder, a chop saw, a wet wheel sharpener and a 1/2 TEFC motor which I use with various grinding implements mounted on motor arbors.
I do not own O/A.
I heard that TIG produces less fumes and lends itself better to doing it indoors. If so, I can weld inside.
I am thinking that if I can block off the light, by say using some blankets, then I will be fine. The noise I can masquerade with a running lawnmower, for example.
Remember, light from welding arcs is hazardous. I do not want to expose my neighbors to hazards, that's not nice. So, blocking off the light is of utmost importance. I was thinking of just hanging tarp around the welding area.
i