[Rebel1]

Another option for panel gaps and alignment.

3mm Klegecell, used in boat building is semi flexible and sands well. Use contact to glue it to the inside edge of the door jamb and have it extend past the side of the body and door panel. Run packing tape on the "parting" side of the foam. In in other words, Jamb it ( on edge) into the gap between the door/bonnet/any panel and the body.

Bog up to it on both the door and body sides and sand as required. Klegecell sands just like bog so you end up with a perfect 3mm gap and perfect alignment. The packing tape gives you a clean part line.

3mm is too thin for a panel gap but you can dress the edge to whatever you want.

Clean off contact residue with acetone.