Download this file before you begin, then create your own OnePlus accessory. Post your design to Ultimaker’s YouMagine. Your submission should be exported in STL and STEP format and preferably include the native file-formats of the CAD-software they were made in. Assembly can be via snap fit, bolts, screws or glue. See Ultimaker for more information. The model has to be 3D-printable. Entries will be judged based on design, creativity, feasibility in 3D printing on Ultimaker, and quality.

Design an original CAD file for a OnePlus device accessory and upload to YouMagine. The challenge is open to everyone except OnePlus and Ultimaker employees. Team entries are welcome. In case of team win, prize will be transferred to team leader who is solely responsible for sharing it among team members. You can submit several entries. Only entries uploaded to YouMagine will participate in the competition. By entering this competition, you

- Warrant that the work is your original work.

- To the best of your knowledge, it is not, and has not been in production or otherwise previously published or exhibited.

- Neither the work nor its use infringes the intellectual property rights (whether a patent, utility model, functional design right, aesthetic design right, trade mark, copyright or any other intellectual property right) of any other person or company, including that of OnePlus and Ultimaker. Applicants are not entitled to any compensation or reimbursement for any costs. The applicant’s participation shall not constitute employment, assignment or offer of employment or assignment. Tag your model with “ultimaker” and “oneplus”. Only entries with valid tags will participate. Submission starts on February 19, 2015 and ends on March 19, 2015, at 11:59pm UTC. Twenty (20) finalists will be selected by public votes. Only 1 prize per person. Winners will be announced March 26, 2015. The contest sponsor has the right to promote the winning entries. All entries must be submitted publicly and awarded entries become the intellectual property (IP) of the Challenge sponsor.

At OnePlus, we are always on the lookout for innovation in tech and design. In this community alone, we have noticed a lot of amazing talent coming from our forum members. We see your creativity in the photography, films, and designs you have shared here, and you never cease to amaze us.With that, we’ve joined our friends at Ultimaker , to dream up what is possibly our coolest contest yet.As of now, you are the latest product designer for OnePlus. Create an accessory--any accessory you’d like--and design the CAD file for 3D printing. Twenty finalists will be chosen by public voting, and judges from both OnePlus and Ultimaker will decide the top three. The contest will start today and run until March 19.The prizes are just as epic. The first twenty finalists will each receive an invite for the 64GB Sandstone Black OnePlus One. Third place will win our JBL E1+ Earphones or 3 spools of Ultimaker filament. Second place will win a 64GB Sandstone Black OnePlus One. And our first place winner will be awarded their very own Ultimaker 3D printer. Interested? Just complete the following and you’re in: