This a new version of the bottom mounts for my Ender-3Pro.
*Previous versions:

• https://www.youtube.com/watch?v=LHV0pny2ymU&t=70s
• https://www.youtube.com/watch?v=cGSnSw9d7j4&t=45s
• https://github.com/naedioba/Ender-3-Pro-Bottom-PSU-Mount
• https://www.thingiverse.com/thing:5464662

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*How to Move the Power Button of the Ender 3 Pro at the Front Using a Push Button

• https://www.youtube.com/watch?v=1I6Qwf06JbA&t=4s
• https://www.thingiverse.com/thing:5910879

Creality

Ender 3 Pro

Doesn't Matter

Yes

20%

My PSU is 260m x 114mm x 50mm. Therefore, for the mounts, I have the internal width to 116mm and the internal height to 52mm:
length = PSU_width + 2mm
height = PSU_height + 2mm

To avoid having mounts that are too tight or too loose, you can measure your PSU, then type in the appropriate dimensions in the Parameters of the sketch.