Go into the third room. Check out the printing press machine. Try moving the handle. The handle is broken. You will need to fabricate a replacement handle. Take the wooden stick on the sliding panel. Go to the woodworking room.

Go to the saw bench. Place the wooden stick on a holder . Slide the holder towards the blade. Lift the handle to cut the stick. Get a small piece of wood.

Go to the mill machine. Insert the small piece of wood. The machine will start operate. Take a lathed piece of wood.

Stop by the main room to check out a mechanical arm next to the forge. Notice a set of strange symbol combination on the arm.

Go back to the third room. Insert and turn the lathed piece of wood as the handle. The machine will produce a print of a mechanical arm. Take a look through your eyepiece. Turn the dial to match those on the mechanical arm in the main room. Take the camshaft.

Go back to the mechanical arm in the main room.

Mechanical Arm Puzzle Solution:
1. Place the camshaft in the arm compartment. The hand is holding a key. There is a dial and a switch. Use the dial near the mechanical arm’s elbow to control the hand. The solution is actually on the print of a mechanical arm from the printing press machine.

2. Slide the switch to the second position. Turn the dial until the hand opens. Grab the strange key.

Go to the iron box. Look at the top of the box.

Strange Key Puzzle Solution:
1. Check out the side with square bar. Place the key on the bar. Use the key as a handle. Turn the handle until two arrowheads aligned.

2. Check out the side with four spikes. Take a closer look at the strange key. A ring can be rotate on the shaft of the key. Rotate until the square hole align with other three holes. Insert the key on the spikes. Again, use the key as a handle. Turn the handle until two arrowheads aligned on the box.

3. Check out the side that has a cylinder with indentation. Take a closer look at the strange key. Rotate the tip of the key so that the bit is pointing up. Insert the key on the cylinder and turn the key so that the arrowheads aligned.

A mechanism will trigger and reveal an engraved pyramid. Take the pyramid. You will be teleported back to the glass room.