Micro SD Ring

thingiverse

If you love 3D printing, then slip on an SD ring. Slip on an SD slot ring onto the finger that holds your heart. Holding a micro SD RAM card, I noticed it was about the same size as my grandmother's engagement ring. It was pretty easy then to stick an SD slot onto the top of a ring I quickly designed in the shape of my mother's favorite piece of jewelry. The 21mm version fits perfectly on the middle finger of my manly hands. I have also created a small (16mm) one and a big beefy(25mm) version, suitable for monsters, all-star wrestlers and professional phone-book rippers. The small one is just a bit too small for my pinky, so it would work perfectly for some ladies or kids. Big and beefy is ideal for giants, superheroes and strongmen. I've used a little 'tension bump' in the card slot to keep a good hold on the SD card. Depending on your printer, slicer and such, you may have different results, but for me the card stays nicely secure, without being hard to extract. Given the shape, supports are essential. My results are pretty good with just supports down to the build plate, and a raft, but see what works best for you. Note that all microSD cards are not created equal. A fraction of a mm makes a huge difference. One of the ones I have is a bit snug in a ring that fits another perfectly. If yours is like that, a bit of sandpaper on the 'tension-bump' of the ring will compensate a bit. Great printable gift for that tech enthusiast who has everything, yet still carries his SD card in his pocket. Please share your result pics! I'd love to see what it looks like in other colors than the white and grey PLA that I've got. Extra Bonus If you don't have a microSD handy, but still want to try the ring. Included is an STL file for an insert the shape of a microSD but with a stylish, hemisphere on it. It will slide into the ring and you can wear it purely as a fashion statement. Or edit the STL file to make it your initial or a heart or some other design. LATER The ring has been a hit since I shared it. It's also been invaluable for me as an everyday-use thing. I'm often transporting a microSD around as I run around my house. But showing my ring to others, often it doesn't fit their fingers. If you resize the ring for your finger, remember you can only resize the ring part - not the data card holder piece, 'cuz that needs to stay the same. LATER AGAIN Added a few more sizes for fingers close to 17.7mm, 18.6mm or 19.5mm. The originals are: small: 16.8mm; medium 21.0; beefy 25.6. Print Settings Printer: * MP Select Mini * Rafts: Yes * Supports: Yes * Resolution: .1 * Infill: 30% * Notes: Supports are crucial both for stability and supporting the layers. Being a circle, it's self-supporting to some extent, but the card slot 'box' will certainly need supports under it. Use the best resolution your machine can offer. Being such a small item, it uses very little filament, so you can experiment with different settings. I've only tried it in PLA - it's incredibly strong. Post-Printing Depending on how clean it comes out, you may need to sand it lightly. Try using a bit of sandpaper rolled up to sand the interior of the ring to ensure it's smooth against your skin. Some microSD cards seem to be slightly thicker than others. You might need to slightly sand the tension bump to let the card come out more easily. Most of mine seemed to have a good balance between friction to hold it in place, and ease of removal. Drag a sharp tool (e.g. a mini screwdriver or blade) around under the lip of the slide-in space to ensure there are no tendrils left that will obstruct your card insert.