@Steven-chaplin not sure if mine crashed but mine was in a middle of a print and had 35 min left to go and ot just stopped. Not sure what to do... it doesn't say stop print on the machine.
@apple_user_1772460510 I usually web search the item I'm looking for in .stl format. So say I wanted a plate I search plate.stl.
Tinkercad is also great for learning design and altering files.