Summary I was connecting some odd sized PVC and needed an adapter on one end of the 3/4" coupler, so I did what every 3Der would do... I made one. It is less than 3/4" OD by about 1 mm but that was by design so it worked for what I was doing today. Print Settings Printer Brand: MakerBot Printer: MakerBot Replicator+ Rafts: Yes Supports: No Resolution: 200 microns