This 3U assembly fits 6 Intel NUCs in standard 19 inch server racks. Printed in 3 separate parts, it is assembled using M3 nuts and flat head screws. Ample room for airflow.
I printed it using Polymaker PLA Pro and has shown no signs of weakness or warping in about 5 months of continuous use. Enjoy!
Notes:
The author marked this model as their own original creation.