JBL horn tweeter stand

My first functional print using TinkerCAD. I am adding an active JBL horn tweeter to my Fostex BK-16 folded horn. With this support I can shift the tweeter back and forth to get the drivers in phase. When I am satisfied I will mount it permanently with epoxy to make it cat and childproof.
I am using a MiniDSP 2x4 sound processor and a UMIK-1 measurement microphone to set it up.
The folded horn kit:
https://www.madisoundspeakerstore.com/full-range-speaker-kits/fostex-bk-16-folded-horn-kit-pai