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phil, there is no title to the drawing which you have posted but you have labeled your post as Sten Panels. Does the drawing relate to the trigger housing which is welded to the receiver of the Sten???
She does seem to look at the rivets very carefully each time as if each end of the rivet is different before putting them in the holes but as you say, Vincent, they appear short parallel sections of rod. I did wonder if one end had a small centre hole and the other end didn't in order to aid peening over which would explain the operator looking at each rivet carefully before insertion.
Not welded just peened with a hammer on the outside and the inside is peened against the iron stake which you see in the film. I suspect that the inner end of the rivet is centre drilled in order to improve the internal or blind side of the peening process, as I have mentioned already. The part of the rivet which is directly hit with the hammer will tend to peen over more readily than the blind end and by centre drilling the blind end it would tend to balance out the rate of peening. You see the operator examine each rivet closely before putting it in the hole which is why I think the ends of the rivet are different.
Last edited by Flying10uk; 08-04-2016 at 12:58 PM.
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