I used the 15 series version shown in the remix as a guide to make this one from scratch. They look identical so wanted to give credit. The fusion 3D file is also included for ease of remixing different sizes.

I made this one in marble PETG and only use the top 8mm countersunk bolts, but there are 8mm thru-holes on the side also if you want additional rigidity.

I printed it with stock Bambu Studio PETG settings, except for 100mm/s outer wall and 3 wall loops.