{"data":{"contests":[{"id":"513","slug":"open-sauce-2026-spinning-battle-tops","name":"Open Sauce 2026: Spinning Battle Tops","teaserImageFilePath":"media/competition/teaser_images/513/small_banner_battle-tops.jpg","description":"### **\ud83c\udfc1 Starting: June 08, 2026, Ending: July 08, 2026 23:59 UTC.**\r\n\r\n### **\ud83d\udcc5 Entries: from May 08, 2026 to July 08, 2026 23:59 UTC.**\r\n\r\n\r\n### First place:\r\n* [Prusa CORE One+ kit](https://www.prusa3d.com/product/prusa-core-one-kit),\r\n\r\n### Second place:\r\n* 1750 Prusameters.\r\n\r\n### Third place:\r\n* 1400 Prusameters.\r\n\r\n
\r\n\r\n### Open Sauce 2026\r\nOnce again we\u2019re teaming up with [Open Sauce](https://www.opensauce.com/), the technology and creator festival for people who make things.\r\n\r\nOpen Sauce brings together makers, engineers, creators, strange machines, homemade robots, backyard rockets, and weird internet experiments ...aaand it's a great match for a Printables challenge. \r\n\r\nThe 2026 event takes place July 17\u201319 at the San Mateo County Event Center in California. So if you\u2019re nearby, stop by and say hello at our booth. :-) \r\n\r\n### Challenge\r\n\r\nThis time, we\u2019re bringing the Printables community into a real arena with a challenge built around 3D printed spinning battle tops. \r\n\r\nDesign a 3D printable spinning battle top that can be launched, survive a hit, and keep fighting in the arena like [this one from stlDenise](https://www.printables.com/model/1698197-3d-printed-spinning-battle-tops)!\r\n\r\nYour model should be ideally launched with a pull-strip or ripcord-style mechanism. Pay attention to weight distribution, contact points, stability, impact resistance, and how the top behaves when it meets another one at full speed. \r\n\r\n\r\n\r\n### This one can leave the screen!\r\n\r\nIf you\u2019re coming to Open Sauce in California, you\u2019ll have a chance to bring your printed battle top and compete with it live in the arena! You can even win some spools of Prusament at the stlDenise booth.\r\n\r\nIf you\u2019re not coming in person, your model can still make it into the action. Someone else may print it, and give it a few seconds of glory in the Open Sauce arena, and we think it's really cool. :-)\r\n
\r\n
\r\n\r\nThe arena is waiting!\r\n
\r\n
\r\n### \ud83d\udcf8\u2b50 Hero model of this contest: [3D Printed Fighting Tops](https://www.printables.com/model/1698197-3d-printed-fighting-tops)","isOpen":true,"openFrom":"2026-06-08T11:21:17+00:00","openTo":"2026-07-08T22:59:00+00:00","modelsCount":83,"winnerPrize":"Prusa CORE One+ kit and more than 5600 Prusameters in total!","entryLink":"","winnersLink":"","printDateValidation":"2026-05-08T00:00:00+00:00","signedModelsCount":null,"maxModelsPerUser":5,"aiGeneratedPrintsDisabled":true,"__typename":"CompetitionType"},{"id":"515","slug":"light-switch-covers","name":"Light Switch Covers","teaserImageFilePath":"media/competition/teaser_images/515/small_banner_switch.jpg","description":"### **\ud83c\udfc1 Starting: June 12, 2026, Ending: June 28, 2026 23:59 UTC.**\r\n\r\n### **\ud83d\udcc5 Entries: from May 12, 2026 to June 28, 2026 23:59 UTC.**\r\n
\r\nLight switches are everywhere, and most of them are just plain plastic plates. For this flash contest, design a 3D printable cover or frame that makes a regular light switch look better.\r\n
\r\nMake it nicer, more useful, or solve one small problem. A glow-in-the-dark frame, a safety guard, a small label slot, or a simple themed cover are all welcome.\r\n
\r\nSwitches are different around the world, so mention the type, dimensions, mounting method, and any hardware needed. And keep it safe: your model must not expose wiring or interfere with the electrical parts.\r\n
\r\n
\r\n### \ud83d\udcf8\u2b50 Hero model of this contest: [Steampunk Light Switch](https://www.printables.com/model/5333-steampunk-light-switch/comments)","isOpen":true,"openFrom":"2026-06-12T16:12:42+00:00","openTo":"2026-06-28T22:59:00+00:00","modelsCount":57,"winnerPrize":"500 Prusameters which are more than enough for one Prusament spool. The winner will also receive the Printables honorary badge, and up to 900 Prusameters will be distributed among other top entries.","entryLink":"","winnersLink":"","printDateValidation":"2026-05-12T00:00:00+00:00","signedModelsCount":null,"maxModelsPerUser":5,"aiGeneratedPrintsDisabled":true,"__typename":"CompetitionType"}]}}

Nikkor 20-35 f/2.8 D AF Focus Lock Ring

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