This design is very specific to the angles and type of staircase.
Although I include all parts in the files because they may be useful for other projects, in this case the intention is to share only the door.
The aluminum of the door frame is 40 x 20 mm, inside the door are 20 x 20mm, the threaded bar is M6
(The length of the aluminum is whatever you want depending on the size of the door you want)
This design is already a few years old, so I no longer remember the size of the washers used.
Note that the entire design is independent of holes in the staircase and floor. In addition, the bolts do not bolt directly to the aluminum, but rather to a 3D printed part with nuts that goes inside the tube.
This are some designs that I and my brother made for our projects.
I hope it will be useful to you.
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