Time: 3 Hours
Today I was able to get all the substructure of the HS dimpled. That’s the process of creating a dent around the hole so that a flat rivet will sit flush. The skins will have a dimple as well. The dimple creates a pimple of sorts on the underside of the metal. That pimple needs a place to sit in so that the two pieces sit flush with each other. So the substructure, like the flanges on the ribs, need a dimple to accept the pimple of the skin that will be mated to it. To do this process you use a set of dies, one female and one male, that shape the metal into the dimple.
Next up will be deburring every hole, top, bottom, inside and out, on both skins. Once that is accomplished I will dimple the skins with my DRDT-2 machine. I set up the DRDT-2 and the table I made for it and clamped it to my workbench. It will be all ready for me tomorrow after all the deburring is done.