Pot watering cone

Drill these down into your pots to get the water deeper down into the soil.

If you want the ready-made STL files, there are various lengths of the cones:
80 mm with lid 12 mm
100 mm with lid 12 mm
120 mm with lid 14 mm
140 mm with lid 14 mm
160 mm with lid 14 mm
180 mm with lid 16 mm
200 mm with lid 16 mm
The lid is 12, 14 or 16 mm.

Or make a customized one by changing the spreadsheet parameters in the FreeCAD file.

The cones can be printed upside down without support.
The lids must be printed with support.