Here is a show board i made with the springs and functions + parts and liners. The liners are random set.
The bushings are made to be on the
rivets and these hold everything together and they got an edge around the head that is pressed into the plastic handles or scales. It is almost impossible to pull a SAK apart.
The spring for the
corkscrew and blades is also a floating spring because there are three functions on one spring. Just like the can opener, flat screwdriver and awl spring.
There are 4 rivets on a SAK and 3 bushings,
number 4 is riveted without.
The liners on this are made of aluminum and the rivets are made of brass, the spacer is made of nickel-silver I believe.
A SAK is a sandwich construction with layers made of a spring and the functions, then a liner and another layer with a spring and functions.
It may not look advanced when you look on this
board of parts but I am one 100% sure that it is very advanced if it is Victorinox or a Wenger Swiss Army Knife. The precision and materials is pretty incredible.
One extra interesting part for me is the spring for the blade and it is a slip-joint construction like we know. When pressure against a surface with the edge the backside tang part of the blade will press against the spring. Any wrong
here and the spring would bend, slip or break, this i have never experienced with a SAK.
the spacer is also special becuse it does not only fill the space for the small blade it also stops against
the spring end.