Phone stand (Passive amplifying)

This is a stand I designed for my wife and I to use while sitting at the table, it doubles as a stand and a bit of sound amplifier, but the main this is that it redirects the sound toward you.

The slot that the phone sits in is 15mm deep so it is big enough for a phone and its case.

The stand pictured (LH) is for a phone with the speaker on the bottom edge on the right, a right hand (RH) one has also been provided for those who have a phone with the speaker on the left.

The STL files pr