Took ideas from some other designs of fully printed racks, but wanted to use leftover ½ EMT from repracks i have as well as widening the base for little more stability.

Cut the uprights to 8.5 inches to fit Polymaker and Bambu boxes, cut the width to whatever size.

Used leftover thread forming screws from the Reprack to attach the wheels.

I have screw holes for securing the EMT to the adaptors as well but after assembling it probably isnt even needed.

Used ball bearing wheels

https://www.harborfreight.com/1-inch-roller-ball-bearing-67060.html

Screws for securing EMT to the adaptors

https://www.amazon.com/gp/product/B00GDYDV5S/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1