The 2 parts fit very loosely and came apart while printing. 
Printed with Bambu lab filament

gogsata

0.2mm layer, 2 walls, 15% infill

sorry to hear that, try to scale the cover (simpler part - mug like) to 98% and print it again

lies sich gut drucken. Bussi zu viel spiel zwischen beiden Teilen. kann aber auch an meinem filament liegen.

if parts do not fit together, use the SCALE command on the female part to enlarge or shrink it by 1% and print it again

dust filter for both 1.75mm and 2.85mm filament, cut a little bit of sponge and drill/cut small hole in the centre