ntsqd
technerd
Square tube would be best. Easier to work with at corners than I beams or channel, and much better torsional strength than them as well.
All of the diagonals make it a bit confusing, but this is modeled as sharp cornered (putting all of the corners is WAY time consuming) 1" square tube x 0.065" wall with the jack tubes being 2" x 0.125" wall. SolidWorks predicts it to weigh ~220 lbs.
All of the diagonals make it a bit confusing, but this is modeled as sharp cornered (putting all of the corners is WAY time consuming) 1" square tube x 0.065" wall with the jack tubes being 2" x 0.125" wall. SolidWorks predicts it to weigh ~220 lbs.