Printed on my Anet A8 for my Monoprice Mini Delta. I resized the spacer to 1 mm thickness and used Microsoft 3D Builder to remove 1 mm from the the main base. I then sanded it a little bit so the filament hole would line up with the extruder motor gear. I did this because I had trouble adjusting the gear on the motor. I'll upload this file in the comments.
Side Note: The blue tape and aluminum foil is my (temporary?) solution for an enclosure. I may add something better later.
Cheap Stuff from Ebay PLA
I used the spacer resized to 1 mm and modified the base to remove 1 mm.