43

It is a "reamer with sewing eye", according to Victorinox (PDF). It is used for punching holes in leather or canvas and can also used to get a thread through the hole, according to SAKWiki


39

The tool has two purposes. As a punch, it acts as a large needle. You can use it to sew leather or canvas, as mentioned in the other answers. Punch the tool through your fabric, put thread through the hole, retract the tool, repeat. As a reamer, the non-uniform blade shape allows you to make quite good circular holes in plastic or wood. Punch the tool ...


26

When mine gets too bad I use WD40 to free it up, then clean with soapy water and a brush. Mine also goes through the dishwasher sometimes, with the blades partially open. If it gets gummed up with sugary stuff (your candy, or cutting up fruit) a good soak in hot water will free up the blades. After cleaning it is a good time to sharpen it. If the hinges ...


15

The producer offers a page of care instructions on their website (here) (PDF). The gist is: don't use a dishwasher, that might be too aggressive open and close the blade multiple times in warm water dry thoroughly put some oil on the friction points (where the blades rotate), open and close multiple times @chris-h's answer is also spot on. I, too, use a ...


7

As a reamer, it is for drilling small holes in wood. As an awl, it is for sewing thick material, such as leather, together. Here are YouTube videos on how to sew with the awl-with-thread-hole tool: How to Sew with a Swiss Army Knife Awl / Reamer by Phil Crockett How to sew with a swiss army knife? by JJR Survival victorinox hack - how to sew with a swiss ...


4

I find those mini saw blades very useful when trying to make repairs to gear or improvise with found objects (not necessarily tree branches)— for cutting notches in a piece of wood to hold cord or wire, for hacking through a plastic drum or car bumper or motorcycle fender, for (slowly) making a long cut in a panel too tough for a knife. You can also notch ...


4

Whenever I get a multi-tool knife now, I skip over the ones which do not have the saw. I do not understand why you can get one with screw-drivers, hole-punchers, and even corkscrews, that would then not also have a saw. I have used the tiny saw on my multi-tools, including the Victorinox Swiss type you have, many times. They get through saplings and small ...


4

My brother used to work as decorator, (which included placing new glass in windows) and his Swiss knife saw blade has helped him several times while working on scaffolding. No need to go down and get a proper saw to cut the wood to hold the new glass. And he has used it for many small jobs, just because it was the tool at hand and he remembered that it was ...


2

I use the punch while hunting to dispatch wounded birds. Simply hold the bird by the neck/head and push the punch into the back of the bird's head. It's quick and humane. I have never used it to sew since I have a better tool for that.


1

As a reamer, I used it to make wooden woggles for scout scarves. Also, if a can is too hard to open with the opener, I punch a few holes with this tool just to start the cutting with the can opener knife later.


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