I try to fix the problem with the cable that when you print some high things that the cable do not stuck in the frame. So here it is you can easily attach it to the frame without any screws or glue.
You can scale up your X axis then it gets longer. In my case i designed it with 10cm I guess thats enough.
The curved side does not looking great I know but it do his job and you dont see it on the printer.
Enjoy printing :)
I added a version with full core that you can print without support :)
I printed it with support but I think you can try it without.
Print it on the curved side.