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Bottle Opener Key

Bottle Opener Key
Whenever I stand up from a seated position, my first instinct is to perform a sort of signum crucis* to check for my wallet, keys, and phone. I can generally do anything with those supplies. Except open a frosty, bottled beverage that does not have a twist-off cap. I can open a bottle with a lighter, an Expo marker, and a table top. I have even used my teeth. But nothing beats that Boy Scouty sensation of always being prepared.

I need a low-profile bottle opener. Currently, I am using one of these to hold my keys and to open my bottles. It's cool, but it's huge. I have nearly worn through a pair of jeans with this monstrosity, and the time has come for a more permanent solution. I remember coming across this little gem** several months ago, and it seems like an easy enough project to do in an afternoon. A bottle opener that doesn't leave an unwanted bulge in my pants. A bottle opener that is on my person at all times, but no more noticeable than my housekey.

So here's what we've got after a trip to the hardware store for some extra keys:

a bottle opener cut into the bow*** of the key
a pile of brass dust (aka Maker glitter)
an open frosty bottled beverage

This project should take you all of fifteen minutes to complete, and that includes the time spent consuming your beverage.





*Holler si Latine loqueris. You know, the sign of the cross. Spectacles and so forth. Go watch a Mass or Austin Powers, depending on your religious inclination.
**The Makr site sells a much more attractive version of this project. Buy one from them if you don't have and can't borrow a Dremel.
***For those of you non-keysmiths out there, a key is divided into two major parts: the bow and the blade. Yes, that sounds like a sweet fantasy novel and/or RPG, but it's just the handle and the sticky-out part.
 
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Step 1Supplies

Supplies
  • Key(s)
  • Bottle opener
  • Sharpie
  • Safety goggles
  • Dremel
  • Vise
  • Frosty beverage

Reluctant to (possibly) destroy one of my personal keys, I used a few discarded keys from the local hardware store. Just ask. They'll probably have a few cut keys that don't work for whatever reason. Or you can just jump in and try it with your house key.

You'll probably want to use a regular bottle opener as a template for the shape of the cut you'll make in your key. It really helps to have a pattern to follow.

Safety goggles are a must for this. You'll be staring intently at your key. Bits of brass will fly at your eyes. Cover them up. I ended this project covered in brass shavings. I looked like a four year old after an unattended arts and crafts class. But my eyes were mercifully brass glitter-free.

For the Dremel, you'll need a cutting disk and a sanding wheel. You could do this with a grown-up grinder, but it'll require a very deft touch. Use the Dremel. Keep your fingers.

Speaking of finger safety, use a vise. You might be able to get away with a pony clamp, but you will definitely not want to just hold the key in one hand and the Dremel in the other. Unless you are a cyborg.*

For the frosty beverage, I recommend a Mexican Coke. The kind that uses real sugar instead of high fructose corn syrup. Or just get the tamarind-flavored Jarritos. Or, you know, a carbonated hops-based alcoholic beverage. 



*If you are, in fact, a cyborg, you may skip all of these steps and just use your metal claws to unbottle your drinks.

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50 comments
1-40 of 50next »
Aug 18, 2011. 7:41 PMflipbook says:
As a previous comment mentioned there are two different styles of cuts shown in the top image. The one on the left is the one in the movie. This one works. The one on the right is pretty useless. I doubt if it ever works. There is nothing to leverage against. I think you should get rid of that one and only focus on the one on the left to avoid confusion. It means aligning the "church key" handle appropriately when you use it as a template. You might show that too. But it is a great idea. I'm just bummed because I just made the useless one on the right and now I can't open my beer.
Aug 24, 2011. 7:58 PMflipbook says:
wilgubeast, I've attached some images of the key-opener I made that uses the "push down" method for opening. It works great! The trick is to save the nub at the base of the long part of the key. The "nub" (probably called the shoulder) will be the pivot that you lever against. I've attached some pictures. I hope they help. Let me know if you want a better "action" shot.
Aug 17, 2011. 1:22 PMmikeasaurus says:
nice one, Wade!

Dremel+brass keys = maker glitter
(wear them goggles!)
Aug 18, 2011. 7:20 PMblacksmith_tb says:
This also looks like something that could be done with a jeweler's saw, for people with a little more time on their hands. I have a dremel, too, but I think I'll try sawing first.
Aug 19, 2011. 8:11 PMblacksmith_tb says:
I just cut an opener out of my garage door key with the jeweler's saw - shown here with the opener on my Utilikey (which is OK, but has to unclipped from the keyring to use).
Aug 22, 2011. 5:32 PMmikeasaurus says:
Nice job of your Key Opener, thanks for sharing.
You've been patched and awarded a 3-month Pro Membership to the site!
Aug 21, 2011. 6:21 PMAutomator says:
For those of us who are married, a wedding ring makes a nice bottle opener too. I suppose any ring will work, but I find my tungsten-carbide ring is perfect for popping beer tops!
Aug 20, 2011. 11:46 AMdll932 says:
You can make one that's more interesting looking and durable out of a bit key (popularly known as a "skeleton key"). The blanks are made of cast iron and won't wear out as fast.
Aug 18, 2011. 9:26 AMdidgitalpunk says:
i did this with a ring ---in fact i kind of copied thinkgeek's idea's---(go see on thinkgeek.com in "geek tools" and search for a ring with a bottle cap beside it)
Aug 19, 2011. 1:54 PMdidgitalpunk says:
here are some pictures of the one i already made
Aug 19, 2011. 1:38 PMdidgitalpunk says:
ok but it'l be long cause im going on vacation tomorow for one week and then i have to prepare for school but i'm shure it'll be online before october : )(this will be my first instructables yay =} )
Aug 19, 2011. 1:34 PMagis68 says:
clever....i have a banch of lost and findes keys...i will try to make mines....thnx
Aug 18, 2011. 11:27 PMZoDo says:
This is so cool and simlple. When I have some free time I wanna try this.
Aug 18, 2011. 6:23 PMtswill2 says:
Lacking a Dremel, a hole could be drilled in the bow and a hacksaw with a fine blade could complete the opening. A few small files would smooth it up nicely. If it's a scrap key being modified you could round off the teeth on the blade to be nice to your hand and pockets. Looks handy - think I'll make one! tswill2
Aug 17, 2011. 5:51 PMfrankiebishop says:
Not bad...but, a bit on the frivolous side. You can use a key without having to modify it to open a bottle. Just press the key against the bottle with your thumb and gently opening the cap around 1/2 to 3/4 of the circumference of the cap. Then...walla! Opened! Another trick is too take the bottle and place against sharp solid edge, then impacting the cap with the bottom of your palm. Walla! Opened! No dremel, goggles, vice or wasting time necessary...
Aug 18, 2011. 6:02 PMkmccollum says:
But there's something to be said for using the right tool for the job. Voilà!
Aug 18, 2011. 8:29 AMSpokehedz says:
I've used the key-under-the-cap-side method and broken many a bottle lip of both soft and hard drinks. Or, it fizzed all over from the bubbles that I made before opening a small part of the seal.

This instructable, has never broken a bottle yet.

So unless you like glass infused Coke, then I suggest that you take a key that you can make spares of, and make a spare bottle/door opener with this in. It will take up exactly no extra room on your keychain, so there really is no reason not to have this on there.
Aug 18, 2011. 9:32 AMspark master says:
absolutely dead on, I seldom drink beer, but when I do I drink GERMAN BEER , never Mexcican (sorry, the krauts got it down to science and art and are to be praised for that. Ok there is Kronenborg Martinelli and a few other Euro centric tasties, but mostly Deutch Brau ooober allus).

I have busted bottles using other methods and watch a NON drunk teenager break a tooth on a cap. Now he has a cap, won't do that crap again.

this is a great simple how to.
thanks
Aug 18, 2011. 6:58 AMSHIFT! says:
Possibly, but where's the FUN in that?
Aug 18, 2011. 5:48 PMJeffwho says:
If you don't have a dremel, or just don't feel like using it, a good set of files will do the job in no time.
Aug 18, 2011. 5:53 PMJeffwho says:
P.S. I love the idea and am now looking for keys I don't need to make myself one.
Aug 18, 2011. 4:31 PMMarsh says:
Nicely done!
Aug 18, 2011. 1:57 PMryanmercer says:
This beats the heck out of opening it slowly with my swiss-tek screwdrivers haha
Aug 18, 2011. 6:47 AMimshanedulong says:
Where did you get glass bottled Pepsi? I've always wanted that since Coke tastes so much better out of glass.
Aug 18, 2011. 1:56 PMryanmercer says:
If you do have Kroger's in your area it'll be in their 'ethnic' or 'international' aisle. Same goes with most big chain groceries really, but your best bet is a Mexican grocery.
Aug 18, 2011. 1:55 PMryanmercer says:
Find a Mexican grocery in your area, they almost always have glass bottled coke and other glass bottled sodas (, also if you have Kroger's in your area they'll have some generally as well as other Mexican sodas)
Aug 28, 2011. 4:32 AMJollyrgr says:
Sam's Clubs have Mexico Coke. I've also heard that Costco has it as well. The small "Mexican" grocery stores and restaurants have them as ryanmercer stated.
Aug 18, 2011. 9:38 AMfuzychiapet says:
It seems everything these days is also a bottle opener.
Aug 18, 2011. 9:34 AMvader0ne says:
Hey I know a lock smith that would love this idea...Great idea!!!!
Aug 18, 2011. 8:22 AMchrwei says:
Did you see any performance difference in the 2 types of cuts you show in the picture? Does the one on the right work at all? seem like the leverage is on the wrong side
Aug 18, 2011. 7:50 AMSHIFT! says:
What a fantastic idea! Now the next time I break into my neighbor's house, I can avoid getting sued by surprising them with a six-pack!
Aug 18, 2011. 7:36 AMmossman says:
I found this on etsy a while back...got as many old keys as my heart desired from the locksmiths at school, and a bunch of dremel cutoff wheels!
They turned out pretty well, but I need to find where I put the finished ones!
Aug 18, 2011. 6:29 AMbelsey says:
Love this! So simple it's genius.
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Author:wilgubeast(Extracurricular Instructions)
I taught English, History, and sex ed to middle school kids. Then I worked as a handyman. Now I work at Instructables.