Legal Disclaimer:
You should not use these parts. You need to use the traditional metal bushing available from a few suppliers or DIY by grinding out a bushing you can purchase from the box stores. These printed copies, though identical in measurements to their metal counterparts, are a proof of concept. Printed parts should never be put into a place where they can be the cause of bodily harm and these parts are not intended for production or permanent use. Flash The Neighbors, LLC is not responsible if you decide to use this part outside of the design parameters and/or put the part in a position where failure of the part could cause property damage or injury. There....everyone on the same page? đź‘Ť
Theoretically, these bushings can be used when assembling the multi-stage ASAP Jr./Sr. mega tree pole, which starts with a 2" Rigid Conduit, then has a 1.5" Rigid Conduit inside. The bushing could center the pole and keep it from bouncing around. If you were go for the ASAP Sr. pole, you then use a piece of 1" Galvanized pipe inside the 1.5" Rigid Conduit, which is what the smaller bushing could theoretically be used for.
Multiple files are included with the download. The 'Project' files are Prusa Slicer 3MF projects that can be directly imported.
No special print settings should be required but here's what I used: