This is a support for a trellis that I made for the Planter Challenge on instructables.com.
If you choose to print this, you will need to modify your scale to fit your printer. Once you choose a size, be sure to change the z height to 10mm for a sturdy result.
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/0VjvU8g2xPl