Notes on Rivet Sets for Skin Riveting

If possible, skins should be back riveted. This process provides cosmetic (and some structural) protection to the outer skin. Some locations will permit access for use of the spring loaded (type I) back riveting set. On others, such as wing ribs, a special long back set having an angled face is used to back set rivets. In either case, a partner uses a polished, 3" diameter back riveting bar (plate) to buck rivet heads from the outer side of the skin.

The Swivel flush set mentioned above is a must when selecting aircraft riveting tools. Unlike conventional sets, the swivel set will maintain flush contact with the surface being riveted, despite small variations from vertical in gun position. This helps to prevent 'smiles' in the surface caused by a slightly cocked gun set. Also, the rubber outer boot around the set allows the operator's free hand to secure the face of the set to the work surface - this prevents smiles and it also prevents the gun from accidentally traveling off position. If the skin cannot be back riveted, normal riveting with a swivel set will help to maintain a similar quality.




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