Here is another version of a Boardman Bee Feeder.
After originally printing the beefeeder by TheHeadlessSourceMan https://www.thingiverse.com/thing:269229 ,
I realized that I wanted a larger feeder that incorporates interchangeable jars, for the jar threads tend to stick to the PLA layers.
This design uses standard WIDE mouth quart jar lids (~86 mm or 3 and 3/8 inch Jar mouth), which rest inside the feeder up to the neck.
Simply place the feeder into the entrance of the hive, puncture a few holes into a canning jar's lid, and invert the lidded jar onto the feeder.
Please let me know how yours turns out!
As requested, I have added a couple more designs with shortened entrance tunnels, which should accommodate more printers.
Original: 200.5 mm long
Shortened_1: 190.5 mm long
Shortened_2: 170.5 mm long
Feel free to request more changes, anyone.
This was designed with forgiving tolerances (>0.5 mm), so feel free to print with greater layer heights. I used supports to bridge the "roof" of the feeder, as I was using stringy, high-temp PLA, but a decent PLA should bridge this design.