Credit Card SD Holder

I've been carrying around a USB flash drive on my key chain to hold all that geeky stuff I need, but I decided that was totally 2006! Now that they have those SD cards that also have the USB interface I thought I could lose some of the stuff on my key chain, and just hold one of those in my wallet. The following is an example of how that could be done, as well as pretty simple instructions(I think).

Remove these ads by Signing Up

Step 1: The supplies...

Knife
model SD CARD
Sharpie!
cutting board
Fake credit card

I get a few fake credit cards in things a week, so there isn't a whole lot of stress involved if/when I make a bad cut.

robonut625 says: Jan 24, 2007. 6:35 PM

That looks good. I agree with Andrew... would it help to have something on the back? I can just imagine me getting one of those out of my wallet and popping the SD cards out on the floor and losing them! lol But hey, I'm just a klutz!

T-bear in reply to robonut625Mar 7, 2007. 12:40 AM

Here's a crazy idea...just take another "extra" credit card and glue it to the back. Most credit card holders in wallets are designed for multiple cards anyway. For that matter you could use three cards(front, middle, and back) but then again you are back to the bulky aspect which spurred on this discussion.

RichardDawkins in reply to T-bearFeb 20, 2011. 3:23 AM

That is exactly what I've done with the holder I made. You need 3 plastic credit-type cards. The one in the middle has memory card slots cut out of it. Measure for size, then score a line at the bottom of the slot. Using sissors, cut "into" the card to the score line. Bend the tab you've cut to open up the score and it snaps neatly off. Trim for size and you have your slot. Superglue that to another card will form the back.
The final card needs little notches cut out before gluing to allow you to slide the cards out. That's it! I use mine to hold 8 micro-sd cards and I'm very pleased with the result.

Caveat: Use too much superglue and you could glue your card into the slot. Tip: If you find the cards are too loose a fit in a slot, you can put a little kink in the side by pressing down from the top on the empty slot. This tightens up the hole and the cards don't fall out. Enjoy! :-)

One. says: Oct 16, 2009. 10:42 PM

u said that you went from USB to SD.... why?

Enter 77 says: Oct 10, 2008. 2:01 AM

Where do you get the fake credit cards from? Are they just in junk mail or something?

sarCastro (author) in reply to Enter 77Oct 19, 2008. 12:34 PM

Yeah, exactly. I get them from junk mail.

Enter 77 in reply to sarCastroOct 19, 2008. 7:36 PM

That sucks, im in New Zealand, and we don't get plastic ones like that lol, just cheap cardboard ones.

silx says: Oct 17, 2008. 11:12 AM

coincidence...last month I was think make this with my mini usb pen drive...but I was thinking to do with an old pcmcia card or old cut pci lan card too...pcmcia card is better than credit card, because is metal..and it's same size of credit card...

Nick.XIII says: Mar 11, 2008. 1:19 AM

this is a really great idea in theory but in practice not so much unless you have a stiff wallet..i did this awhile back for my PSP memory sticks but i broke my 2gig and 256mb cards cause they bent slightly in my wallet and the flash chip snapped in both...so unless you make this out of a very rigid metal or something then i dont suggest doing it.

sarCastro (author) in reply to Nick.XIIIMar 11, 2008. 8:58 AM

I've been running this system since I put together the instructions, and I haven't had an issue. Where the cards are in my wallet might be fairly stiff though, because they are sandwiched in the pocket that is between where I put my credit cards(2) and the pockets where I put miscellaneous cards(like 4 or 5). I don't think you need to go so far as metal, but I agree that a rigid part of the wallet is probably best.

Nick.XIII in reply to sarCastroMar 11, 2008. 3:49 PM

ahh, ok. well i guess that would do. i dont really have much in my wallet, when i made one of these was almost a year ago and i wasnt 18 yet so i had almost nothing in my wallet, i was usin old promo cards my parents got in the mail, so i didnt have enough rigidity in my wallet. but there is still always tat chance that it might bend alittle and *snap* there goes a card. just a slight warning from experience :P build the case sturdy, and use the most rigid part of your wallet for storage(between other cards)

Notn4 says: Jan 19, 2008. 12:27 AM

great tut but glue another credit card under it so the SDs won't fall out

PSPerson says: Nov 11, 2007. 9:28 AM

HOLY CRAP!! i could fit like 20 micro SD cards on this!!!! i have a RAZR2 so this iz perfect

skonofvulcan says: Mar 8, 2007. 3:59 PM

Insted of cutting an outline of each SD card why not just cut a diaganal cut at only 2 corners of the SD card's outline so you can flex the credit card slightly to insert the 2 diagonaly opisite corners. Kind of like how you would mount a business card inside of some presentation folders. That would hold the SD cards in place.

tsaylor in reply to skonofvulcanApr 30, 2007. 10:55 AM

That would make the whole thing thicker and put more force on the corners of the sd card. It would likely break under the force of being sat on.

BubbaCoop in reply to tsaylorJul 4, 2007. 6:25 PM

(removed by author or community request)

Mario2007 in reply to BubbaCoopNov 1, 2007. 10:08 PM

Thats what I do , I always put it in my front pocket much safer and a whole lot more comfortable!

tv5847 says: Mar 8, 2007. 8:11 AM

I think this is a great and with Andrew546's suggestion, it is perfect. I use xD cards, so I can put more on a card. Works great! Thanks

princess fiona says: Feb 27, 2007. 3:31 AM

Why not just keep the little box it comes in when you buy a SD card?

sarCastro (author) in reply to princess fionaFeb 27, 2007. 10:31 AM

Yeah, that would have been a great way to protect the SD card, but it's a too bulky for my taste. I don't think I explained why I did this project very well. The idea was to have something that would replace the flash drive I usually keep on my key chain. The reason I'm not concerned abut the SD contacts is because I'm actually using this product:

SD + USB

which is a USB flash drive in SD form factor. I haven't even used it as an SD card yet, I probably never will.

hhead says: Feb 27, 2007. 5:59 AM

the idea seems good.i will let you know more when i have tried it

Rodg says: Feb 27, 2007. 4:19 AM

You've attracted quite a few Monday Morning quarterbacks...and quite a few good ideas. Glad to be aboard. Rodg

tennysol says: Feb 14, 2007. 1:56 PM

You could use a baseball card plastic sleeve to keep the "credit" card in, it's about the right size, cheap and should protect the SD cards from gunk and grime.

hethlee says: Feb 6, 2007. 11:50 AM

Great Idea- i also agree with puting a film cover over it to protect the cards

JohnSR says: Jan 27, 2007. 8:50 AM

It appears that using two or three credit cards as a sandwich may just be the ultimate solution for my dirty wallet. I will never be without an extra flash card again. Thanks.

sarCastro (author) says: Jan 25, 2007. 1:36 PM

I think that Andrew's duct tape idea would work pretty well. I might try it. I'm not too worried about the exposed contacts though. I might take the procrastinators approach and just clean them with alcohol if they ever don't work...

theRIAA says: Jan 24, 2007. 7:22 PM

i like it... i would cut them vertical because of wallet bending, and use a clear plastic (credit card holder) sleve

Andrew546 says: Jan 24, 2007. 6:15 PM

Looks good, i would suggest putting a cover on the side with the contacts so they don't get dirty/damaged. You could do that by putting a piece of duct tape sticky side away from the card, just big enough to cover the openings, and then put a largeer ppiece sticky side towards the card covering the whole thing.