- Pvc tube with a 11cm diameter (or near) and 60cm (length).
- 2lts plastic bottle
- Drilling machine
- Paper tape
- Utility knife
- 1 Bolt and screw (about 0.5cm diameter)
Concentrate the heat in the zone above the cuts.
In case you have a powerful hairdrier or a hot air gun, you can use one of these to heat the tube in a more controlled and safer way.
I've chosen the stove because it was more practical for me.
One in the top and the other one in line with the lowest cut (see in the next image how it should look).
The one lined up with the last aperture serves to hang the plastic bottle (which will function as a earth deposit-see next step).