Due to the numerous steps involved, Lithography definitely has the ability to overwhelm the uninitiated. Each part of the process does actually exist for a reason, and if your end goal is to produce a quality print, you would be well served to slow down and perform each step correctly. Fortunately, the process involved in this type of printing is not as complicated as you might think. Like any seemingly difficult task, practice makes perfect. I will try to images of each step posted in the near future, but you’ll have to bear with the text for now. With that said, let’s get to the first half of this process!

Litho stone ready for surface prep
1. Get your hands on a substrate (flat printable surface) of some kind. So far, I’ve only had the pleasure of working with limestone, so this outlline will be applicable only to that specific material. From what I understand, quality Lithography stones are expensive – an 8″ by 12″ block can run upwards of several hundred dollars. If you manage to get a quality stone, take care of it!
2. Prepare the surface of the stone for printing. Before you even think about drawing an image on your substrate, you will want to first verify that the surface of the material is flat and free of any markings or artifacts that could potentially interfere with the image when printing. This can be easily accomplished by grinding the surface of the stone with carborundum grit (I like to think of it as sandpaper without the paper; the powder also comes in various grit sizes) and a metal tool called a levigator, which is basically just a heavy round piece of metal with a handle affixed.

Between grinding
Place the stone on a flat surface that you don’t mind getting wet, and dampen it with water. Sprinkle a small amount of the coarse carborundum grit (80 or 100 grit) on the now slightly moist stone surface, and dampen the bottom of the Levigator with water. Gently rest the Levigator on top of the stone, and start grinding! Spin the Levigator in a clockwise direction and traverse the entire surface of the stone, making sure not to spend an inordinate amount of time in any one place. Every couple of minutes, remove the levigator from the stone, and use some water to clean away the ground material from the stone and levigator. Apply an additional small amount of the same grit size carborundum, and repeat the process. I prefer to grind the stone in this fashion three times for each size grit size, rinse the stone and levigator a final time, and use a straight edge to check for flatness by placing a small strip of paper between the stone and the straight edge. A flat stone should be flush with the straight edge and allow no room for the paper to move.

Levigator on stone
3. Establish a border around the edge of the stone surface, using a non greasy material like conte-pencil, and fill in the border with gum arabic.
After drying, the gum arabic will act as a masking agent and prevent grease from encroaching into the border area, effectively avoiding printing in this area. I usually measure out a one-inch border, however this entirely depends on the size of the stone and personal preference.

Post grind

Done
4. Draw! Once the gum arabic has had a chance to dry thoroughly, you are ready to start marking on the stone. The final print will show exactly what you draw on the stone. Keep in mind, any marks that are made on the gum arabic border will not transfer to paper when printing. Any greasy / oily material will suffice for drawing on the unmasked portion of the stone: graphite, grease-pencil, and asphaultum are just a few of the many viable options available.

Conte border

Gum Arabic border

Using asphaultum to draw - blurry