I didn't know my phone camera lens had a greasy smudge on it so that is where the halo in the photos come from. When building a custom T-Top for a boat I add references, here a vertical center is added to work to.
Aluminum pads are bolted to the steel pads so when I weld the frame to the pads a perfect fit to simplify removal and re-installation of the canopy frame is achieved.
Just a shot of the welding area, the table and stands are both needed due to the size of the forward riser.
Now with the forward riser welded in place I can move on to the next step of fabricating the rear riser.