Spell Effect Wall of Ice

This is a Spell Effect Wall of Ice remixed from:

The Wall / Muralha - Game of Thrones
by 3dgeekshow posted April 13, 2019
https://www.thingiverse.com/thing:3559998

I took the ice facing of the original file and sliced it from the balance as narrowly as I could without creating holes. I duplicated it, rotated the second 180 degrees, aligned and joined them within Meshmixer. I made them solid then hollow at the highest resolutions available. I then set the dimensions and trimmed the bot