Before modifying ErikJDurwoodIl's VEND file to fit onto the 200mm x 200mm bed, I printed his original at 80%. In order to get the mason jar to fit I modified the jar file to fit the 80% scale. I didn't plan on sharing this adapter because it wasn't my original work and I already modified the VEND file so no one would need it. But there was a request for this so here it is. FYI: It's not threaded for the jar.