(Read description carefully) print settings Using 3D printing settings fast Friday on cura would suffice. If cura slicer is not an option refer to YouTube search for slicer and settings. gradually decrease print settings by 20% if necessary calibration cube is always a fast and cost-efficient way of making sure print settings are perfect and as needed.Rectangle in the center can transform holder into charging station. Pull the tip of charger through rectangle using fast hardening epoxy epoxy around tip of charger be sure not to epoxy around metal which inserts inside phone you will not be able to take charger out of phone. Carefully place phone firmly with epoxy around the plastic tip and inside of the rectangle if feels necessary of in place phone down hold firmly until epoxy drys, slit underneath is to be used to fold wire inside be sure to epoxy inside of slit and hold until epoxy drys. Do not use charging port unless epoxy or you will damage your charger over time and only use if only wanting to convert into charging port you're not use hot glue made damage charger. Good luck and happy printing