Open the file you wish you engrave first and draw a vector box around the image you are engraving. Turn on the Red Dot Pointer and send only the vector job to the laser. Remember to run it with the lid open, so the laser does not fire.
Once you are satisfied with the placement of the design, remove the vector box and send the raster job to the laser.
To diffuse the heat caused by the laser, we applied a thin layer of liquid dishwashing detergent to the engraving area. This helps ensure the material doesn't fracture while you're engraving.
Repeat the steps above to engrave the back of the canisters as well.