Plant slow drip bottle spike (Ripple milk bottle)

This is a planting spike intended to be used for a Ripple Milk bottle but the threads will work with some other plastic bottles that I've come across . Threads are generated from the "Threaded bottle or Jar cap generator" by mscalora on printables and run through fusion 360 before getting exported to tinkercad which is what I normally use. The insert is intended to reduce chances of soil getting sucked into the bottle but I haven't tested it to check if it works. The insert needs to be printed with 0 walls and 15% gyroid infill and inserted into the spike with a firm push to seat it. Glue might be helpful, but it shouldn't need it. Make sure water drains through it The spike needs to be printed with 4 or more walls for strength. Water only drips from the tiny hole at the tip. The bottle should not be punctured for venting, the water is supposed to drain slowly over a few days from suction from the soil. You will need to pull the spike to fill it with water. My intention is to use the spike to keep the soil moist around my tomatoes so they don't crack during the summer heat. Testing: I get an air leak around the threaded portion probably due to imperfections in the printed thread. I'll try some teflon tape to improve the seal. Twisting it tighter just makes the thing break along the layer lines so I don't think tighter is necessarily the proper fix for an air leak.