This is another quick and easy project to make on a laser cutter. (I just joined TechShop, and I now have access to all kinds of wonderful equipment, so this is one in a series of "I made it at TechShop" Instructables.) This project assumes that you have already had some training on safety and basic use of your particular model of laser cutter. My directions are based on my experience with a Trotech machine, but they are basically agnostic - they should work whether you are using an Epilog or Trotech machine.
Step 1: Materials:
- pebbles from the beach
- soap and water
- some canola oil
These were my tools:
- Adobe Illustrator, for creating the words
- a Trotech 100-watt laser cutter
- paper towels
Step 2: Preparation:
- Go to the beach. (Or a construction site.)
- Look at the horizon.
- Breath deeply.
- Think of words and ideas that matter to you.
- Pick up some smooth flat stones and put them in your pocket.
- Wash them with soap and water when you get home.
Step 3: Etching:
Place your pebble flat on the cutting bed.
Use a focusing jig to be sure the laser is the correct distance from the pebble.
Set your power and speed settings to the default for Stone > Granite. After your word has etched once, open the laser cutter and look carefully at your stone without touching it. Is the word etched deeply enough? If not, you may want the laser to make another pass to etch it more deeply. Depending on the color of the stone, I went with 2, 3, or 4 passes.