Very nice. You must have enjoyed building a retreat where you can be surrounded by your toys/tools and be comfortable. I noticed what looked like a marine (sailboat) cabin heater on one wall. Hopefully it will provide sufficient heat. I know that they are effective on a boat to keep the cabin air dry.
I recently completed a similar project and to deal with harsh winter conditions I insulated the walls and used steel barn tin to line the interior walls and ceiling. My shop is now cooler in summer and warmer in winter.
I agree with your diagonal placement of the mill in a corner. It's an effective use of precious space.
Congrats and let us know when the Shed Warming celebration is scheduled.
That is one nice little shop there, someday maybe I will be so lucky! We have a joke int he shop at work that the perfect retirement home would be 500 square feet with a 50,000 square foot shop attached. One can dream. Here though it looks like a dream come true.
As for the second story / loft area do you have specific plans for that area. I looks like the perfect place to put Air compressors, HVAC, and other equipment that can clutter up a shop floor. My "shop" is in the basement at the moment and thus have plenty of experience with other things cluttering up the work place.
Answering questions, sorry for delay. I spend more time in my shop than online these days.
Yes, the wood stove is a Dickenson Newport marine fireplace that I once used on a sailboat. Dry heat works well with machinery.
The upstairs is where my 3d printer and vinyl cutter live. It's also my hobby robotics lab. I made a silent air compressor using a fridge compressor. The whole setup is on a shelf under a workbench. It's so quiet that I forget that it is running until the pressure switch cycles off with a sudden hiss. Startles me every time!
The flooring is one and a quarter inch T&G plywood, over joists on 12" centers. It's a very strong floor! A concrete floor is preferable with heavy machines, but a wooden floor is more comfortable if you can get away with it.
Recent upgrades to the shop are : an entry door canopy, lots of 3D printed tooling storage, and improvements to the 8x30 mill include 3 axis DRO, separate quill DRO, and table power feed unit. I hope to make a shop tour video soon.
I agree about the benefits of dry heat. We had a stainless box heater on our 37 foot ketch and after a wet ride it was nice to make a fire and dry out while other sailors rushed to the clubhouse for comfort.