I remixed this Model (https://www.printables.com/de/model/176057-prusa-i3-mk2mk3-spool-holder-100-printed-with-herr) to fit the Ender-3 V3 SE.
For printing instructions please visit the link above.
IMPORTANT: this Model is actually a tight fit. So maybe you have to adjust the x-y contour compensation in your slicer to make the bolts a tiny bit narrower. This depends on your Printers accuracy. Please use a Well calibrated printer ;-)
The author remixed this model.
Remix of the Model to fit the Ender-3 V3 SE