Design was created from scratch but inspired by https://www.thingiverse.com/thing:3230634. Wanted one that had some type of funny text on the side. Print the body on its back with supports and print the bolt as is. Also a good idea to scale down the bolt by one or 2% to ensure plenty of tolerance between the 2. I usually scale down until I can see atleast a .5mm difference in size. This will vary depending on settings.