Air inlet spacer for Framework Laptop 13 (AMD Ryzen 7040)

An air-inlet spacer for the Framework Laptop 13 (AMD Ryzen 7040) which fits on Prusa i3 mk3 print-beds. Based on Choumarin's bottom spacer for framework laptops.

For a quick summary, see Differences of the remix compared to the original.

The key difference from the original is that it will - as mentioned - fit on a Prusa mk3 print-bed. Fittings have also been added for attaching magnets, and the rubber feet ‘footprints’ have been increased and modified, among other minor changes.

Magnets

I used standard 12 x 3 mm (~ 3 x 0.12 in) circular neodymium magnets, however the insertion depth is deeper (see dimensions).

There is a margin between the magnets and the top, so they don't actually make contact with the case. I glued the magnets in place with superglue as the binding force was strong enough to pull them out of the fittings after a while.

Placement

The Framework Laptop 13 casing isn't magnetic, but the heat-pipes connecting the CPU to the fan are. The positioning of the magnet cavities loosely align (i.e I eyeballed it) with the heat-pipes on the 13 AMD 7040 - I'm not sure  how much the positioning of these magnetic parts vary on other models, but hopefully not much. Keep this in mind if you're using a different model or CPU!  If unsure, gauge points of attraction by moving a magnet along the air inlet and see if it lines up with my placements. Be careful with strong magnets.

The strength of the binding can be adjusted a bit by pushing the magnets further down the cavities; see what works for you. I've added small holes to ease removal with a small screwdriver/pin.
 

A note on adding top rubber feet/pads 

TLDR, I recommend not adding pads to the top.
Although I made cavities for placing rubber feet/pads on the top of the model (contacting the bottom of the laptop), they don't really add much. I somewhat regret adding them: I don't think the laptop will be scratched by the spacer, especially since the magnet holders leave a gap between them and the laptop surface. Furthermore, the more spacing you add (i.e the thicker the feet/pads are), the weaker the magnetic force becomes. The magnetic force also slightly flexes the spacer, since I didn't add pad cavities near the center. Try it without those pads first. If you come up with improvements, I'd love to know!

Dimensions
 

Model 

• 234 x 77 x 12 mm / ~ 9.2 x 3 x 0.47 in (width x depth x height) 

Feet cavities

• Square: 14.5 x 15 x 3 mm / ~ 0.57 x 0.59 x 0.118 in (width x depth x height)
• Round: 13 x 3 mm / ~ 0.51 x 0.12 in (diameter x height)

Magnet cavities

• 12 x 5.5 mm / ~0.472 x ~ 0.12 in (diameter x height) 
   

Included

• Choumarin's original model files & information
• Blender project
• PrusaSlicer project with variable layer heights
• A plain ol' STL
   

Printing (FDM)

• Prints with the bottom (flat) side on the print-bed
• No supports are needed, and no more than 15% infill is necessary
• 2 perimeters (vertical shell) for rigidity 
• Layer height isn't important: my included PrusaSlicer project mostly uses 0.3 mm ("DRAFT" height) with minor reductions on areas for the cavity “bottoms” for better glue-adhesion
• I printed this with Prusament PLA and it's fine so far, after a month
• PETG might be a safer choice to prevent warping in hot environments
• It took me 4.5 hours with the settings mentioned above on my Prusa i3 mk3.
• Uses approx. 60 grams (of PLA)