Demoka M-203 spill tray
thingiverse
The Demoke M-203 grinder does not have any spill tray for grounds, hence things get easily messy with it. Problem solved: Here's an add-on tray that fits in place and also stays tight due to the embedded neodymium magnets. (see: https://youtu.be/e_kKNgPygB0 ) PLEASE NOTE: You need to pause the print to drop the magnets in. As the magnets I used https://www.clasohlson.com/fi/Neodyymimagneetti/p/Pr311466000 that I happened to already have. In this design the seating of the magnets turned so tight that I had to insert them by using a soldering iron. P.S. After uploading my design, I noticed there's other thing solving the same problem: https://www.thingiverse.com/thing:4872227. You can choose to your liking.
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