Thom, If the floor is not heated and you want your feet to stay warmer and better for you back and legs a wood floor is the way to go. When my Dad and I had our woodworking shop set up in an old gas station with the repair bay the main floor area for the tools and storage etc. We used what was called "Sturdi Floor" that was 3/4" osb that had T&G edges, we laid down a framework of 2x4 and 2x2 so we could run electrical lines. We used for almost 2 years and never painted it, but over time and use it was smoothed out by foot traffic and sawdust and never did any thing peel up but a few dents were put in here or there but never caused any issues. Since the shed is going to be the shop and not a vehicle use area it is a great beginning and can be painted or whatever later and it also gives you very easy ways to attach things to the floor. One other thing is that you can pour a pad that the lathe will be on to give it a solid base and the wood floor will match up to it.
So for me no 2 part 1 part or whatever, but I am stuck with the old garage and the floor mats that I stand on where I need them.
Good luck with the new buildings and have a Merry Christmas,
Jeff
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