Spin Off - One Handed bottle Opener

thingiverse

Obtain 3D models Our design is open source and can be downloaded for free on Thingiverse [16] under the Creative Commons - Attribution license. There are 2 sizes, one for small bottle caps commonly found on water bottles from Poland Springs, Dasani, and smart water as well as most sodas, and a larger size for caps found on Gatorade and Hint. These models can be printed individually or at the same time and operate independently, so choose what best fits your needs. Additionally, our design features embedded magnets to hold the two sizes together during storage. This requires 6, 3/8in diameter, 1/16in thick, neodymium magnets [15] (McMaster-Carr part number: 5862K143). If you do not require this feature, choose the models labeled no magnets. 3D Printing Our design can be printed on any FDM or SLA 3D printer out of most common filaments, although flexible materials such as TPU may not function as intended. Import the STL file downloaded in the previous section into your preferred slicer and position the device on the build plate such that the device lies flat with the build plate with the large opening pointed up. We found the best results with 20% infill density, 0.15mm layer height, and rafts enabled. Once the print is done, remove the raft. Additional Steps for Magnets If you wish to add the magnets to the 3D print, you must configure the printer to stop at a specific layer so you can add the magnets before resuming the printing process to cover them. The exact steps vary depending on the slicer and printer. Use the layer slider to find the highest layer where the cutouts for the magnets are still visible, and add a pause command at that layer. When the print reaches the pausing point, add the magnets into the cutouts without removing the print from the bed. Make sure that on one device, the south side of the magnet faces up, and on the other it faces down, otherwise the two parts will repel instead of attract. The magnets must be super glued in place before printing over them so they don’t pop out of place. Once the magnets are in place, resume the print. Assembly Once the Device has been printed, the necklace can be attached. Cut a ~3ft length of 5/36in (4mm) diameter paracord or similar. Poke one end of the paracord through the small hole in the device as shown and tie a barrel knot to secure it. On the other end of the cord, tie a loop large enough to fit comfortably around your head. Allow for 6in of space between the knot and device. Adjust length to what is comfortable for you.