This is a phone holder ment for driving. This is so you can plug your phone in and connect it to your car for directions but, be out of the way and not on the dashboard. There is no specific way of mounting the holder but what I did was use velcro to stick it on so its removeable. I used a Ender 3 Pro with the standard settings and it had no problems with printing it. I will recomend having a skirt around it if, you do have some problems with prints not setting on your build plate. You can use any type of stiff filament but PLA is the best. *Warning, this is ment for the Samsung S22 dimentions so it may need to be changed for larger phones. It works for phone smaller than it but they will rattle around a little when you drive.*