I wanted to mount some cables to my Prusa MINI's Z alu profile using something reusable - that's how this rachet was born.
The "T-nut ratchet for 30 mm alu extrusion profile.stl" contains a pocket for an M3 nut. You can fix it with a 15 mm M3 bolt.
I have iterated a simplier version with an M4 hole to use it with a proper T-nut.
Link to the design: https://myhub.autodesk360.com/ue282d3d0/shares/public/SH56a43QTfd62c1cd9685643e0a1951e2bb3
Update #20200211 - new features:
Installation: https://youtu.be/bvUciTL83wk
Blogpost about the design process (sorry folks, Hungarian only): https://fns.pappito.com/2020/02/11/3d-nyomtatas-a-dagadt-csirke/
No support needed.
The author marked this model as their own original creation.