I created a construction tube that can be printed along with some attachment pieces, then fastened together with standard PC fan screws. You can see my proof of concept in my YouTube video at the bottom of this description!

I recommend printing the 215 mm tube in a heated environment of at least 100 F (38 C). I found that to help reduce warping significantly when using PETG.

I plan on adding more accessories to this post as I create more projects with this construction style.