Glowforge Depth Engraving Test
Out of curiosity, we created a test image with 9 squares filled with different colors to test depth of cut vs. color on the Glowforge. We wanted to see if the GF would engrave deeper depending on the color of the image.
Machine: GlowForge Pro (45W CO2 laser)
Material: ¼" Birch plywood (0.235")
Draft Quality: 195 lines / inch
We measured each square four times - three in the corner and once in the center of each square to get an average measurement of the pocket that is engraved. All measurements are in inches. The following is a table of our results. As it shows, the color had a very minimal, if any, impact on the depth of the engraving. Observationally, it appears that #6 was the darkest.
|Color||Red||Green||Blue||Black||Gray 50/255||Gray 100/255||Gray 150/255||Gray 200/255||Gray 250/255|
We re-ran the same artwork, but this time we modified the speed of the engraving. The colors of each square were kept the same as before. In this test, we modified the engraving speed by increments of 100 from 1000 down to 200. As you can see in the image below, a speed of 200 burned through the entire thickness of the ¼" Birch plywood sample.
Since the data we measured in our first test did not vary greatly between the four data points, we only measured each square once. The table below summarizes our results. In this, we can see a more significant trend of cutting depth vs. engraving speed. These tests warrant further exploration and future additional testing. This table is provided as a reference and a starting point for future designs and projects.