This keychain is modeled after a genuine Green Bay Packers Foam Cheesehead. It is scaled down to 1.5 inches with a hole added for a standard #3 ball chain, 3/32" (2.4 mm) ball diameter. The same chain used by the US military for their dog tag chains.
Ball Chain:
https://www.amazon.com/dp/B07HT1TCRR?psc=1&ref=ppx_yo2ov_dt_b_product_details
I found the best print results came from printing the cheesehead right side up with ironing on all top surfaces and support material where the person's head would go. It adds about 10 minutes to the print and some post-possessing. However, it produced a much better surface finish on top than printing with the cheeshead's top surface on the print bed.
Printed in Prusament Mango Yellow PETG on the Prusa MK3S+.
GO PACK GO!
The author marked this model as their own original creation.