I wasn't able to find any 24V LED strip for my MK3S+, but I was able to make it work with 12V strips, by wiring the two strips _electrically_ in series.
It would have been a bit easier to do, if there was a path inside the left mount from the front strip to the rear strip. As it was, I had to run a pretty long wire alongside the front LED strip. I tacked it down in a few places with hot-melt glue, so it wouldn't move in front of the LEDs. (edited)
Completed one today. Very elegant design!
I wasn't able to find any 24V LED strip for my MK3S+, but I was able to make it work with 12V strips, by wiring the two strips _electrically_ in series.
I emphasize "electrically", because putting LED strips in series electrically is not entirely obvious. See https://www.waveformlighting.com/pcb-designs/using-a-12v-led-strip-in-a-24v-system
It would have been a bit easier to do, if there was a path inside the left mount from the front strip to the rear strip. As it was, I had to run a pretty long wire alongside the front LED strip. I tacked it down in a few places with hot-melt glue, so it wouldn't move in front of the LEDs. (edited)