2Way tube connector with lock

thingiverse

I've created a custom design specifically for BF3 formicarium, and the entire process took just 30 minutes in Freecad. I aimed to create a structure that fits perfectly inside a silicon tube with an inner diameter of around 11mm. You may need to experiment with the spring scale to get the desired fit, but even without it, the design should ideally work well enough to be used without any additional support. Printing with PLA and using a layer thickness of 0.25 is more than sufficient for this particular part. Please note that this design is not intended for aquarium use as it lacks hermetic sealing capabilities.