foam hole saw (for aku drill)
thingiverse
Hole saw (cheap plastic hole cutter ∅22mm) to drill holes into very light materials (foam, polystyrene etc...) - can fit into any (aku) drill the same as 10mm drill. Keep the tool cold, recommend only short operation time (~10s), to prevent defect of the plastic material caused by the heat from friction. For the best performance put a small amount of WD-40 regularly. print settings for *.obj file (Wavefront OBJ file): recommend PETG 100% infill recommend little sharpening with knife If you need different hole diameter - edit the FreeCAD files included.
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