It has been previously ruled that you cannot use 3D printed parts for wire management since they are not commercially available, even if they are nearly identical to a commercially available part. See These:
https://vexforum.com/t/answered-r7-d-l-3d-printed-custom-manufactured-wire-management-materials/42282/1
https://vexforum.com/t/answered-3d-printed-wire-clip/43786/1
https://vexforum.com/t/answered-additional-3d-printed-question/43799/1