Magnetic Coasters and bottle holder

thingiverse

Some friends of mine had a hot tub and the drink holder spots were tiny flat patches. Things kept getting knocked off, so I came up with a solution. Both parts need to contain a magnet. The print will have to be paused just before the magnet is inserted, then completed. I used round magnets that are 15mm x 3mm in size from Amazon https://www.amazon.com/gp/product/B07MZ6WHHK/. They're strong enough to keep things from slipping, yet easy to grasp. Enjoy