Magnetic apple

I made some of this for my wife to use when teaching basic math to small children.

The model is basically an svg of an apple with 4 negative cylinders embedded to make room for 6x2 magnets.

I printed using a .6 nozzle and a layer height of .3. If the layer height is kept to .3 a .4 nozzle can be used without problems but to print at other layer heights the Z position of the negative space cylinders will need to be adjusted so that they are one layer above the build plate (one solid layer needs to be printed before the magnet cutouts). The 3mf project also includes a pause at layer 9. This is needed to pause the print so that the magnets can be inserted. If the magnet size or the layer height is changed the pause needs to be moved accordingly (it should be set at the layer where the magnet holes are covered).

Print settings used:

filament: I printed both in PLA and PETG 
layer height: 0.3
wall loops: 2
bottom layers: 2
top layers: 3
sparse infill: 20%
fill multiline (newer orca verisons): 2
infill pattern: gyroid

Additional materials required: 4 6x2 magnets