I found the original Mittzon frame from Ikea to have too few cable covers, leaving them too loose and visible for my taste. So I've replicated them to cover the cable paths better.

Model includes the original size equivalent, but the length is scalable as desired. I've successfully printed it with 25cm.

Recommended settings for 0.4 nozzle:

• Brim (print it standing otherwise it's prone to breaking along the layer lines)

• 0.28 line height

• 0.6mm line width

• 1 wall loop

With these settings I could get a 25cm piece in 1h, you can always tune it for quality at the cost of speed depending on what is more important to you.

I haven't tested PETG yet, but it works fine in that orientation with PLA.