Here is another I have marked out a little more than I normally would so you can see what I'm cutting out. I highlighted the line in the moulding and then placed a rule over it to mark the handle strips.
Rag cloth rescued from an old bed mattress that I cut into tray size to use as capillary matting and now cut again into strips wide enough to be rolled up and stuffed into the neck of the bottle as capillary membrane.
Five 1mm holes drilled into the pop bottle cap to allow the water to get into the inside of the plastic bottle top via the wicking capillary membrane once filled with soil.
The three parts of the Self Watering Pop Bottle Propagators the water container the growing basket and the Propagator cut to length so that the handle fits neatly inside and supports the propagator lid part, which can have a cap with holes added or the cap can be removed, as can the top of the bottle once the seedlings are up and no longer need the propagator lid.
Basket in the water container. The handle helps hold the bottle top you will be using as a Propagator in place.
Self-Watering Pop Bottle Propagators in use earlier this year, the plant label fits nicely in the middle of the bottle.