I wanted smaller more compact parallettes. I tried different designs and ended up with this, also with the idea in mind to customize the front sides as you want, to make them your own.
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I'm using a Prusa MK3.9 with a 0.6 nozzle (border width is optimized for this diameter), but any nozzle size will work!
PLA works, but PETG is recommended, just to be sure!
0.32 STRUCTURAL, smaller layer heights are also possible :)
15-20% Honeycomb infill
2 perimeters, 3 for extra strength
Print time per stand ~2,5h with these settings.
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The build is quite easy, here's the recommended instruction.
You cut two pieces of wooden dowel (diameter 40mm) to a recommended length of 20cm. But if you want, you can also shorten or lengthen the length.
Slide both 3d printed pieces on the bar and lay the parallette on its side, so both printed stands can align properly.

If the bar won't fit, either sand it to size or sand the inside of the stands to fit the bar. I designed them with extra material on the inside that can easily be sanded away.
This step is not necessary, but may help to put in the screws later, as the wood might split. So predrill the holes with a 3mm drill bit.

You still should make sure, that the 3d printed stands are aligned properly so the parallette won't tip later. Now take to 4x35 wood screws and screw the stands in place.

BE CAREFUL not to tighten them too fast or too much, the 3d print might crack or split. Just make sure the screw sits nicely in the countersunk hole!

Last step :) Get some anti-slip pads. I recommend them strongly as the 3d printed parts are quite slippery on the floor. In addition they even out any skew in the feet, if they're not mounted perfectly aligned.

Cut them to a size of 20x10mm and stick them into place.
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In the files for the build, you download the blank version and the .dxf for the recommended outside border for your pattern, as well as the spacing around the screw hole. Import both into your program of choice and start designing. You can use my designs for reference in case of that.

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The author marked this model as their own original creation.