One-way 3D printed wire chicken door, also known as a bob door. These are commonly used with pigeons. This version is for chickens. Print between 4 and 6 Tees and 2 or 3 lock bars. use 4mm wire or a wire clothes hanger to create the bars and axle. Mount in a simple frame at least 9.75 inches wide for 4 tees. 
Works great for getting chickens back into a run without releasing the whole flock. 

Bob Door Chicken Wire One-Way Door.stl

LockBar.stl

Tee.stl

I saw a video from Matthias Wandel where he made this clever little camera base. I liked the design and also thought it would be a good chance to practice my 3D modeling. I made this in tinkercad. 
https://www.youtube.com/watch?v=0-6RctbVxFo

Camera Aiming Platform

camera platform Base.stl

A plug to fit the exit port of my Intex pool. I used this to connect to a solar heating contraption. Works okay. 

PoolHoseEndThing.stl

I wanted longer legs on the cute octopus model so I figured out how to make it happen using MeshMixer. Three extra links per leg. Prints fine on my Ender 3 v2 with plenty of room to spare. Photo shows a 150% original (red) and a 120% long leg version (blue).

LongOcto5.stl

I wanted longer legs on the cute octopus model so I figured out how to make it happen using MeshMixer. Prints fine on my Ender 3 v2 with plenty of room to spare. 

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Bob Door Chicken Wire One-Way Door.stl

Camera Aiming Platform

PoolHoseEndThing.stl

LongOcto5.stl