Filament feed guide for IKEA Lack enclosure

This is a small filament feed guide to allow filament to pass through the IKEA Lack table.

This guide has a hole just big enough to put in a piece of 4mm PTFE tubing so that 1.75mm filament can easily feed through without rubbing. To insert the PTFE, I had to twist the the tubing while pressing it into the printed part slowly.

I tried without the PTFE however with a PETG printed guide, PLA filament rubbed and made a loud noise would printing.