Been following this with some interest because it seems it could turn into something.
Maybe I could offer a word about the abstract concept of "dual purpose". Simply put, it doesn't really exist. For example, a motorcycle. It can somewhat do dirt and can still be ridden on the street, so it's labeled "dual purpose" but in reality, doesn't do especially great at either. Of course, fans of the concept (such as I) are fine with that because there's no need going nutty in any special direction. Flying cars are another wildly pursued undertaking with the exact same results. The importance of all this babbling is an interesting paradox that results. That is, the more you pursue having BOTH, the less you have of EITHER. The more effort put into a good driving car, the more abysmal it will be when wings are attached. To make it a performing plane, so much of the automobile componentry becomes superfluous that it's simply dead weight. After sufficient compromises are made (and there's always many), it becomes either an encumbered car or a death trap with a steering wheel.
Obviously, these are complex examples. But in your case, the same realization should take place. The choice is simple. Is this a 1) bedroom you can do some machining in? or 2) a machine room you can sleep in? This distinction is real, IMO. Considering the furnishings, I'm thinking you're already leaning toward option 2. Then i read this:
Dust is a fact of life for me.
Y'know, i live on a farm and tend to keep the dirt out. Which is why I wouldn't have the grinder in there. Of course, I'm funny that way. I'd have the grinder out with the woodworking stuff because that's where the dust is. I don't have my grinders anywhere near my mills and lathe because that grit goes everywhere and invariably settles where it can do the most damage. Cutting you can do with appropriate feeds and speeds to minimize debris, but grinding is always gonna be a mess.
So why would any of this matter? I mean, right, it's your house and none of my business. But i think this is bigger than we might imagine. Remember this post?
And what will a night at these luxury accommodations cost ?
I think you're on to something.
Those of us that remember when the "bed and breakfast" craze was starting, also remember when the "winery cottage" and "fantasy camp" ideas also followed. Ordinary people that know almost zippo about winemaking or football paying enormous sums to spend a night or two with those that do.
I see your modest bedroom here as something that could really grow legs. It would appeal to the neophyte and craftsman, alike. A niche market to be sure, but by indications, a steady one.
For every guy that owns a machine, there's a hundred or more that would love to but cannot. Okay, come stay at the "Bed and Boremill" (I dunno...) or the "Spindle House" (whatever) where we have a far reaching curriculum of machining experiences for the first-timer and experienced machinist, alike.
Sure, this is not where you're going, but someday, someone will. When these things start popping up all over, you can say you started the whole thing right here on this list.
Wrat