@jeffrey37 posted:Thanks Peter. I was going to order the plywood before getting the base put together. I am glad you showed me this. Now I will wait and take some good measurements.
To illustrate what I mean a little better, I took some pictures with my 48" level....
1st, on a 48" I-beam.....
next, on a 36" I-beam....
Lastly, on a 24" I-beam......
That extra room that will be available for the layout will be great!
Peter