Just as one example, in all of the brightly-marked areas seen in these photos of a freshly rebuilt Corsair rear fuselage/empennage, those are all areas where there are lines of spot welds:
http://www.sandersaeronautics.com/resto ... 1-1024.jpghttp://www.sandersaeronautics.com/resto ... 5-1024.jpghttp://www.sandersaeronautics.com/resto ... 3-1024.jpgThe bright areas of the metal is where an acid wash has been brushed onto the aluminum to purify the surface prior to spot welding.
More on just the rear fuselage/empennage assembly can be seen here:
http://www.odegaardwings.com/corsair-pictures/As you can see on the reverse sides of these sections, the skins are spot-welded to the stringers and ribs, with rivets applied in strategic locations and at the edges of the panel (to the longerons and joints/joining ribs).
http://www.sandersaeronautics.com/resto ... 2-1024.jpghttp://www.sandersaeronautics.com/resto ... 9-1024.jpgOn these sections of the wings, you can see more indications of lines of spot welding where there is brushed-lines/swaths on the metal that is a different tone. All of the rivets are dark in color/tone.
http://www.sandersaeronautics.com/resto ... 7-1024.jpghttp://www.sandersaeronautics.com/resto ... 5-1024.jpghttp://www.sandersaeronautics.com/resto ... 8-1024.jpgThrough the main cockpit section, again you can see how, for the most part, the skins are spot welded to the ribs, with riveting only mainly at the edges of the panels.
http://www.sandersaeronautics.com/resto ... 4-1024.jpghttp://www.sandersaeronautics.com/resto ... 5-1024.jpghttp://www.sandersaeronautics.com/resto ... 6-1024.jpghttp://www.sandersaeronautics.com/resto ... 8-1024.jpg
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