Dust Shoe for a CNC with 75mm spindle and 100mm dustextractor. There are 14 8x3mm magnets printed inside the part to hold the top and bottom part together. You can take the bottom part of to easily change the milling tool.
I printed it with PC to withhold the high temperature from my spindle. With PLA I had problems with the material softening und come loose. But with PC some warping was unavoidable, maybe a filament in between regarding printabilty would be sufficient.