I've remixed the model of emazzarol, because I didn't have the right sized magnets for this print and also didn't like the text branding since it complicates the model.

This model has NO predefined magnet slots.

Instead you place it in your bambu lab slicer, and then add 4 or 6 cylinders (right click, add primitive, cylinder), which are the size of the magnets you want to use (I used four 10x4mm magnets).

Add 0.2mm to the size of your magnets in both dimensions for a good press fit and then place the cylinders at the edges of the model. Now select all parts and right click → assemble.

In the object tree view of the slicer, right click on each cylinder and change type to negative part.

When you slice the part, you can verify, that the slicer added the holes for your custom magnets.

The supports on this model are a bit hard to remove, not because they stick to the support area, but because they are linked through the hexagons in the internal silencer fins. I've still been able to clean the model with just a pair of pliers and a pencil to press the supports out of those hexagons. After that, the support came off easy (even without support W filament).

Maybe try tree support instead of the normal one, which I used.

Printed with default 0.2mm settings and BambuLab PLA, unfortunately I ran out of white filament and had to improvise.