Bird Feeder

If you want a suction cup-mounted version, please see the other bird feeder I created here

You will need one (1) 80mm width acrylic (plexiglass) tube. I used this acrylic tube specifically. 

Print the bottom, the top, and the lid. Use epoxy, silicone, or acrylic sealant to glue the acrylic tube into the center of bottom part. Make sure you apply enough to fill the space to avoid water getting in and to ensure a strong hold. You might also be able to get away with using a strong superglue but I personally have not tried it. Then glue the roof part onto the top of the acrylic tube. Screw the lid onto the top and rest something heavy on top for a few hours and wait for the glue/epoxy/sealant to fully dry before trying to use the bird feeder. 

On the roof there are two holes for you to hang the bird feeder from. I personally used 1/16" steel wire threaded through the holes but you can use twine or hooks or any similar thing. 

I recommend you print the roof with at least 30% infill, and with a “grid” infill so your printer doesn't struggle with bridge infills. 

Print using ABS or ASA. Personally I've had the best results with Polymaker's ASA but you should be able to use any other brand. PETG or Nylon is also a valid option. Do not use PLA because it will deform and wither in the sun and rain. Lastly, I recommend you print it in either blue, red, or green. Data seem to indicate that birds are most attracted to those colors: https://www.perkypet.com/articles/color-in-bird-houses-and-bird-feeders, and https://birdfeederhub.com/what-color-bird-feeder-attracts-the-most-birds/