Sliding Door Bottom Guide for Shower

The bottom sliding door guide has been broken on my shower since we bought our house, and I figured I'd use it as an opportunity to learn to model some simple objects.

I used PETG, and time will tell if it holds up or gets gross with soap scum over time, but I figured it was the best bet of all that I have on hand.

I figure that there are coatings that I could put on it to make it impermeable, but I will leave it as is now and see how it holds up.