This gives a nice smooth layout surface and takes the tracings from the carbon paper very well. A line is drawn as a vertical reference across center of short dimension as a plan reference. Plans are shown on wall. Wall and floor are painted white to greatly brighten work area and ease epoxy drip removal.
Pencil indicates match of traced lines on board and of the blueprint after flipping for second half.
I am using White Ash for the frames. Note plastic to protect table and plans from epoxy. Center framework is clamped to table to set the reference line for the floor gusset, which is a very critical dimension. Align this piece with a try square set vertically. The floor gusset rests on the motor stringers.