Print-in-place Geared Maker Coin

thingiverse

Hey everyone! Here's my custom coin maker that I designed for the Dec 2018 Prusa competition, created with Fusion 360 and printed on my Mk2s using some PLA. Thanks to all the support from the Prusa Facebook Group and good luck to all other entries! Update: I won! Thanks to everyone! To print: I suggest printing the coin with 0.35 mm tolerances first, and only the second one if that one fuses or jams. The one with 0.2mm tolerances is by far the best in terms of spinning duration and how smooth it rotates but needs a well-tuned printer to print. This was my first attempt at printing in place gears so it's a little looser than I would like, but better loose than too tight I suppose. After adding some all-purpose grease or oil and playing with it for a while, it spins much more freely than when it was fresh off the build plate, so I recommend doing that. I included a mesh modifier .stl for those using slic3r; I used a 15% infill for the main body and used the modifier to turn that thin, easily breakable part to 50% infill for peace of mind. Some other things to note: - No supports - Look out for elephant's foot, that might jam it up. - Also look out for stringing, that might be bad. - I've printed it at 0.2mm and 0.15mm layer height, both seem fine. - It should print in about the same time as a Benchy. - I used both multi-purpose grease and sewing machine oil; both work great. - Feel free to down-size it if you are confident your printer can handle it. Edit: Coin with 0.2mm tolerances added! Enjoy! I look forward to your prints! Feel free to ask me any questions you may have in the comments! P.S. The "R" is for my name, Ryan Khoo!