1. Go to right and get the metal that’s on the peg near the door.
2. Click the red glowing switch in the middle of the furnace, this opens the control panel.
3. Head to the control panel on the right and change the switch 1 to the bottom, 2 to the top and 3 to the bottom.
4. Click the red button which activates the claw.
5. Ensure you’re back to normal size and go sit in the cart.
6. When the claw picks you up, click the shelf on the left above the door to jump on it.
7. Use the metal key to open it.
8. Change the top part so you have Black, Red, Black and Red from left to right. Don’t change anything else as it could result in you not being able to get back up and having to restart the level.
9. Jump back down into the cart.
10. Click on the worn wires to the right of to cart and invert them so red ties with black.
11. Go back to the control panel and activate the claw and run back to the cart.
12. The claw will carry you in the opposite direction – click on the tube on the right to exit.
Next: The Prison Cell