Primed bars may be made by processing an elemental bar in the second basement level of the elemental workshop. There are two levers that operate the claw; the west one lowers and raises the claw while the east one rotates it 180 degrees.
Pull the north lever in the middle of the room (the jig cart operating lever) that is just underneath the yellow sign. Send the jig cart & the elemental bar to the next station.
Pull north-western lever, that is directly next to the press (right clicking on it yields "An old lever") on the west side next to the 3 pipes which disappear into the floor of the room to flatten the elemental bar.
Pull the jig cart operator lever until the bar reaches the fan station.
Pull the lever adjacent to the last station to start the fan. The messages; "The fan starts to blow" then "The machine starts rumbling" should pop up.
Click through the messages telling you that the machine turns on, and then pull the lever once more to turn off the fan.
Once the fan rumbles to a halt, pull the jig cart operating lever in the centre of the room. This brings the jig cart and the white bar back to the start. Retrieve the finished primed bar by selecting "take from the jig cart". Congratulations, you are successful!
Assuming one starts with ideal conditions (the tank is empty and the left and right valves are both closed) and you pull the lever for the cooling tank while waiting for the cart to go to the press and then turn the fan on and off while the cart is moving to the fan, it then takes approximately 2 minutes and 5 seconds to turn one elemental bar into a primed bar, if you do it station for station waiting for the cart which takes approximately 2 minutes and 15 seconds.
The creation of the primed bar requires all the four elements. An elemental bar is dipped in lava (fire), flattened by a press (earth), submerged in water (water) and is then cooled and dried using a giant fan (air).