Summary

This is a square or rectangle pipe cap. It can handle various pipe side. This is the "Cover version" of the "Customizable Rectangle Pipe Cap (fusion360)" (thing:4875215) I made earlier.
Customization is done by changing the parameters of fusion360 file (.f3d).

I designed some pipe caps.
-Customizable pipe cap https://www.thingiverse.com/thing:4795549
-Customizable Pipe Cap "Cover type" https://www.thingiverse.com/thing:5150957
-Customizable Rectangle Pipe Cap https://www.thingiverse.com/thing:4875215
-Customizable Rectangle Pipe Cap "Cover type" https://www.thingiverse.com/thing:5153134 ... this thing

[Features]
-Customizable
-Fixed firmly
-Easy to remove from the pipe
-Easy to print(no support)

[Design point]
Designed so that when the bolt is tightened, the bolt is parallel to the pipe. This enabled stable tightening.

[Bolt/Nut type to use]
type: CAP bolt and Nut M3 - M6
bolt length: The recommended bolt length is approximately the diagonal length of the pipe.

[Customizable parameters]
-pipe outer short side (min:8mm at M3, max: no limit)
-pipe outer long side
-pipe thickness
-cover length
-cover thickness
-cover chamfer
-screw size (M3, M4 ,M5, M6)
Detailed screw dimensions are set automatically.
Screws larger than M6 are also possible by manually setting the screw related parameters. (set "bolt_d", "bolt_hd", "nut_w", "nut_h". You need not change "ss")

[caution]
Since the input value of the parameter is not verified in the fusion360, an error may occur. For example if you use a too large bolt for a small pipe, it may break.
If an error occurs, click the OK button in the parameter change window, and then click the undo button to return. This is because even if you try to change the parameters without undo to eliminate errors, the abnormal state may be maintained.