Lego USB Memory Stick




You've seen this a million times before, but I couldn't find it on Instructables

Step 1: Get Your Stuff

Hello All.

Yes, I know. You've probably seen this before, and your probably saying that this wasn't my idea. So no, its not my idea. I just couldn't find it on instructables, so I decided to post it as a reference for the rest of us.

You will need:

A USB memory stick (the thinner the better, it should be thinner than the lego piece)
Some Legos (either 2x4, 2x8, or whatever size you need to fit the memory stick.
A dremel, with a sanding part and that spinner-disc thingy part (see picture)
Hot glue

Step 2: Get Your USB and Empy Out the Lego

First of all, remove your USB stick from it's case. To do this I simply used a knife to pry the two halves open, but it should vary from case to case.

Next, use the rotary disc to remove the insides of your lego piece. I did this by first cutting the middle out of the end of the lego, and then working my way down to the end. Remember to only open up one end of your lego, and only make it as wide as the USB port.

The disc is the most useful tool, because you can make cuts length-ways into the bottom of the lego, without going through the top. After doing this, tilt the disc at an angle then cut of the extra pieces of plastic.

Next use the rotary sander to flatten out all that you couldn't get using the disc. Also, you may need to thin the walls of the lego, in order to allow the USB drive to fit. The sander is useful for this too.

Step 3: Fit the USB and Glue It In.

Once you've cleared out the insides of the lego piece, slide in your USB stick. If needed, thin the walls of the Lego from the inside to allow for more room.

To glue the stick in, first put some dabs of hot glue on the inside of the Lego. Then, carefully position the memory stick on top. Once you feel that you've got the position right, glue the sides of the USB to the walls of the Lego piece. If your memory stick as a small light on it, remember to point it downwards, so the light can shine through the glue.

Now, completely cover all the circuits with glue, as to protect the memory stick from wear and tear etc etc....

Step 4: Test It Out!

Once you make it easthetically decent, and after allowing the glue to dry, test it out! For a cover is simply hollowed out another lego, and connected the cover and the memory stick with another piece of lego.

See ya!



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    77 Discussions

    Not too surprising... Hot glue is an insulator. Try covering up one end of a battery with hot glue, then hook up 2 wires and a flashlight bulb. It won't work. The only thing you should worry about is the hot glue burning the circuit board or overheating it.


    Reply 7 years ago on Introduction

    As long as you only apply heat for a short amount of time (no more than about 4 seconds continuously), the board and components should be fine. After all, some soldering irons work at 400 degrees centigrade but they don't damage the circuitry.


    8 years ago on Introduction

    I just made one of these with a 2 gb stick didnt rlly come out as i wanted but ooh well, ill make the other end some other time when i feel like it:P
    great guide btw:)

    usb lego lolz.bmp

    8 years ago on Step 4

    thanks. i wanted to get the hubby one from etsy for his car sterio but since he needs a 16gig and hers were a little lotsa pricy to begin with i couldnt do it, but now i plan on making him one (will test with a cheaper usb pen drive i have already though.) i think i will try to make mine with a bottom to it of lego also like on etsy. but yeah this is awsome thanks for posting.

    DIY Dave

    11 years ago on Introduction

    They sell tiny 512 MB drives at meijer for only $10. I think I will get one and make a lego flash drive out of it.

    5 replies

    Reply 8 years ago on Introduction

    watch out, some cheap chneese large usb drives are actualy smaller then they say.  they have a spectal program imbedded into them, that tells the computer that it is larger then it really is.  there is an instructable aroung here about how to check if it is fraud.


    8 years ago on Introduction

    Try and find wafer usb sticks as they take less effort to insert in to one of the bricks. I used a 2X4 for the stick and a 2X2 for the cap then simply inverted flat 2x4 and 2x2 for the bottom coverings.

    If you use plumbing goop it takes 48hours to fully harden but holds like crazy. Then if you use some small super magnets (rare earth) and insert them in to the inside of the lego casing while the glue dries; you get a cap that holds itself on.

    I attached the pic with dimes simply to show the magnet placements. Also I would suggest you make a template or use slow speed on the dremel to avoid making a bumpy line on your holes.


    9 years ago on Step 3

    No. I've done like 4 of these. The glue doesn't affect it in the slightest.

    Uhhh guys you do know that megablocks are a branch off of legos dont you? Its to make competition without having to lose money.

    scott!Wiimote Master

    Reply 9 years ago on Introduction

    No, your thinking about megablox, there for very young children, because they are much larger, so the children can't swallow them, megabloks are made by their own company.