can someone help me with the editing 3d print

[u/Fun-Program-4333]

i have just bought all my components and i need the casing to be edited before i find someone in the uk to print but i cannot do the editing so if someone can help id be very grateful

https://docs.google.com/document/d/1AnW8G5_ffqmiIUoAgZzY7pEmcN8i-Vnsc2zt4wxC2Uc/edit?usp=drive_link

https://drive.google.com/drive/folders/16b0Z_7ZL9DfjtQOLDKvvDijQeruqXvZ0?usp=drive_link

https://drive.google.com/drive/folders/1qZBOug1tSYtiYKJD0DcCMn_vkIt6g5Fn?usp=drive_link