Korben,
Really, when were you here at Ft. Sill????

You can go much smaller with a build area than I did. The one you see in my LT-40 build thread is my main building area. But I had two small pieces of steel cut for building smaller assemblies. I have one that is 2'x4' and one that 18"x24". So if you cut a smaller sheet of steel you can easily work on the kitchen table, coffee table, or similar small flat surface. All you need to do is make sure that whatever you lay the steel on top of is flat so that you have a flat building surface to work on.

Ken