Spare car key idea

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Jul 13, 2000
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Can't take credit...found on another forum:



Posted 04 May 2011 16:36
Like many members of this community, I am a student and practitioner of practical preparedness. As such, a good multi-tool is an essential part of my every day carry equipment.

I recently learned of a simple modification that can be made to nearly any brand of quality multi-tool, which will increase its practical usefulness. Specifically, it allows one to replace the least useful tool with an automotive ignition key.


First of all, this is not my original idea.

The idea was submitted by Jeff Nowak, of Vienna, MI, and published in the May / June 2011 edition of Backwoddsman Magazine …the only magazine that I regularly read, other than S.W.A.T. Magazine.

I was able to complete this modification in less than an hour, and the only tools required were: an electric drill, a bench grinder, a set of Torx wrenches (with security bits, in my case), and a fine tip Sharpie marker.

I first had some spare keys ground at a local store.

I had three made, just in case I made any mistakes during the process. I chose keys that were made in USA, and I made certain that they had sufficient metal to allow for the pivot hole to be drilled into the key. I also made certain that the keys were long enough to function in my truck’s ignition switch without obstructing normal operation of the vehicle.

Next, I had to choose my least used tool for deletion.

I have had my Leatherman Charge Ti for about seven years, and I use it numerous times each day. In all of that time, however, I cannot remember EVER having used the serrated blade with the gut hook on it.

Using two security bit Torx wreches, I carefully removed the screw and pin that retain the serrated tool.

Once the blade was removed, I overlaid it on top of my key, and then traced the outline of the serrated blade with permanent ink. Then, I simply ground out my shape with the grinding wheel, and then smoothed out any rough areas with the brush wheel. I used a bench grinder, but a Dremmel-type tool would also be very handy for this task.


After grinding, I re-assembled the Leatherman with the key in place of the serrated blade, and then tested for function.

On my first go-around, I had two only small areas of concern. The key was slightly thinker than the blade, so I had to thin down the key in the pivot area. Also, grinding the back of the key to the proper angle, so that it would correctly interface with the liner lock, was a bit tricky with the bench grinder. Next time, I will use a hand file to more easily make this edge.

After the key was completely installed and the multi-tool functioning properly, I filed a hooked notch to assist in opening the key.

Then I tested it in my vehicle's door lock…

…and also in the ignition switch...

...all systems were GO!

Now I have an amazing new gadget on my multi-tool that will allow me to avoid the financial cost and emotional embarrassment of having locked my keys inside of my personal vehicle. Also, in an emergency situation, it also has the potentially be a life saver.


This post had some nice pics to go with it but I sure you get the general idea.
 
That's pretty awesome, nice idea, thanks much for sharing.

Funny, but I've also had a Charge Ti since they came out, and I USE the serrated blade at least weekly, and had never thought about it
until now, but I am certain I have NEVER used the straight blade. I mean, that's what the knife in my pocket is for, right?? They made a
big deal about it being a nicer steel when they released the model, and i can't say that it makes one little difference to me.
Off comes the straight blade, here comes a Subaru key!!!
 
Wonder how you would swing this with the keys with all the electronics in them.....
 
Wonder how you would swing this with the keys with all the electronics in them.....

It would only allow you to open the door & retrieve the keys you left in there by mistake. I keep a door key in my wallet but it can't start & keep the vehicle running for more than 20 secs. Without the electronic signature, then fuel system shuts down (on my vehicle).
 
Great idea I done this mod tonight on my charge. Never like the serraded blade anyway.
Thanks for sharing the idea.
 
All modern cars have immobilizers, so it wont help you start the car.

Nevertheless its a very creative idea.
 
Cool idea, but I usually just carry a spare in my wallet. Also, how does the weight of the tool effect the car's ignition system?
 
Sounds like the key is mainly used to gain access to a vehicle that you've locked the keys in.
 
Narco99 cant get pictures to post, pm me you email and I will send the pictures. I have a 2011 chevy truck it will start with the key, it flashes check securty something. I put truck in reverse and drive but i heard the truck will only run a short time before it shuts down, it ran about 30 sec. before I truned it off.

Like I said it neat idea if locked out of truck even if it don't start. I have already got more use out of key than the blade, made 2 posts on blade forums about the key and none about that crappy serr blade.
 
lol, that's pretty funny. why not attach the key to your sheath. Or make a bit from it and put it in the bit kit :)
A creative idea though. But I would not want to trade it for my serrated blade :)
 
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