Rail buttons for 2020 Aluminum Extrusions since they are very hard to come across. I mainly use these for my model rockets, but I am sure that they can be used for something else if you put your mind to it. I used #8 diameter screws to secure this, but M4 screws will also work.
Supports are not necessary but can be added if you feel that they are necessary.
Feel free to contact me with any questions or requests! I will get to them as soon as possible since I am still a student.
The author hasn't provided the model origin yet.