Summary

I modified this one: https://www.thingiverse.com/thing:672195

I made it taller so that I could add slots for roads, made the magnet holes pass all the way through the edges, made the magnet holes a little wider, added a hole in the center to reduce the weight a little.

Post-Printing

Add the magnets

            <div><p>I placed 4 2mm diameter x 1mm thick neodymium magnets into each hole in the side and used a little super glue on each side to minimize the distance between the magnets and maximize the strength of the connection. </p><p>You could use fewer than 4 magnets per hole, but with 4, it can hold the weight of one other hex. I'm not sure if that is true with fewer.</p><p>The magnets I used could be found here: <a rel="nofollow" href="https://www.amazon.com/gp/product/B072KRP66C/ref=oh_aui_detailpage_o05_s00?ie=UTF8&amp;psc=1">https://www.amazon.com/gp/product/B072KRP66C/ref=oh_aui_detailpage_o05_s00?ie=UTF8&amp;psc=1</a></p></div>                <p class="detail-title"><strong>Finish</strong></p>            <div><p>I am currently playing around with other finishing techniques, including using XTC-3D, and acrylic matte varnish.</p></div>

Catan magnetic tile holder