just looking through the archives and thought I would put in my 2 cents.
If you were dealing with a person with out the use of their leggs. Instead of moving the smith and loosing heat or setting up the shop for a wheel chair. could you set the forge, anvil, power hammer, and vice/ twister in a circle that would be easily accesed on a swivil chair that is on a steel shaft sunk into the ground say 3-4 feet. Now the anvil, forge and vice/ twister would need to be low enough or the chair high enough to work and the power hammer would need to be set up with a pull cord to work the foot peddle. this would limit the size of stock that could be worked but could this be an option?
And what if you set up multiple stations for diffrent purpouses with the power hammer on a locking swivil. kinda like the train roundhouses on a smaller scale to move the hammer. You know one station could be general purpose smithing and another could be used for larger steel with a chain lift to help support the metal.
This way the smith could hop off his wheel chair and have a solid grounded base to work on.
Just my 2 cents I thought this was an interesting thread and thought I would chime in.:D