[AT] Rivet how-to

[George Willer]

Larry,

In another life I operated a stationary pneumatic riveting hammer, riveting
railroad jacks, heavy conveyor chain, and similar items.  This was, of
course done cold. Those rivets could be easily identified by the cross
pattern the tool left as it hammered and spun... somewhat the spokes in a
wheel.  If such a tool were used, the unique pattern should still be there.
This was in the early fifties, so details are somewhat murky.

More recent was rebuilding a badly damaged Cessna airplane.  Thousands of
rivets headed against a bucking bar... a totally different operation.  (the
power is applied to the opposite end of the rivet.)

George Willer

> They could have been peened in place with a pneumatic gun and a dolly,
> but there also could have been spinning operation to do the conical
> heading.