I made a Hydroponic system from a downspoutwith a 2x3" opening.
The end caps need a clean-out. There is nothing to use that is off the shelve, so I designed my own to 3D print.
Step 1: Download Cap and Plug From TinkerCAD
The plug is red and the cap is blue for illustration only. I would print in white abs to match the downspout color.
Step 2: Adhere Cap to Downspout
I use Marine Glue (5200 adhesive)
This is an entry in the