Colin First is creating a secret underground tunnel from his shed to his house and eventually to an underground bunker in his backyard. In this video, he continues his project by refitting a hydraulic motor and winch, which powered his digging equipment, into a cubby hole inside the tunnel. He also cuts a hole in the carpet above the hatch to make access easier.
Next, Colin focuses on drilling a hole from the bottom of the tunnel up to the surface for ventilation and to pull concrete down to surround the tunnel. He creates a long core drill using a diamond-tipped drill bit and a pipe, and with the help of his friend Rick, they successfully drill the hole.
After completing the hole, Colin continues digging the tunnel, using a hydraulic press to straighten a bent chisel. He also installs a fan to improve ventilation and demonstrates its effectiveness by performing a smoke machine test.
As Colin approaches the end of this video, he prepares for the next stage of the project by adding mesh around the tunnel to prevent the concrete from booming forward and to act as reinforcement. He also creates a makeshift chute to pour concrete into the tunnel and waits for the concrete to arrive.
The video ends with Colin successfully pouring the concrete and expressing his excitement for the project's progress. He also mentions that the next video will be released soon and encourages viewers to subscribe, turn on notifications, and follow him on social media for updates on the project.
Here are the key facts extracted from the text:
1. The narrator, Colin, is building a secret underground tunnel.
2. The tunnel starts from his shed and goes through to his house and eventually to an underground bunker in the back garden.
3. The tunnel has had over 20 million views in previous videos.
4. Colin has made a little dog kennel to sit the hydraulic pump, which powers the winch and hydraulic pin digging equipment.
5. The hydraulic lines will be run under the floorboards to the digging equipment.
6. A winch is mounted on the side of the wall to lift heavy objects.
7. Colin has cut the carpet to fit over the hatch to make it easier to access.
8. A fan has been installed to provide ventilation and improve the air quality in the tunnel.
9. Colin has drilled a hole from the bottom of the tunnel to the surface for ventilation and to pull concrete down to surround the next bit of tunnel.
10. The hole was drilled using a diamond-tipped core drill, which was modified to make it longer.
11. The tunnel is approximately 1 meter away from the point where it will turn left and go under the house.
12. Concrete was poured into the tunnel to reinforce it.
13. A mesh was installed around the tunnel to prevent the concrete from booming forward.
14. A tin chute was created to pour concrete into the tunnel.
15. The concrete pouring process was a success, with the mesh holding back the concrete perfectly.