House Fly Trap for Large Mouth Mason Jar

Update: Removed the posts and change connection method to small slots that top clips into. walls of the roof are all top to bottom and end to end now. I downloaded and printed many fly traps and after some trial and error found some combinations that seemed to work better. I ended up using EZPZLLC's outerpart of the lid with the threads and designing my own internals for maximum effect and this is the current product. Depending on your tollerance the top should snap into the bottom fairly securely. Flies seem to get confused by the walls in the middle and a ceiling vs an open top. I've had a lot of luck with a little water, some fish oil (or other fish product, anchovies or fish meal are popular suggestions), and a piece of raw chicken, pork, or fish. These get very nasty so remeber to be careful when disposing of the remnants. I'll probably continue updating and apologize in advance if I don't respond quickly, but any suggestions and feedback are welcome. Thanks! Printer: Qidi Plus 4 Filament: Oveture PLA Pro (if using outside use appropriate filament) Layer height: 0.2mm Infill: 15% Support: None