This is a colored keychain that I made with the F1 Ultra and blue light.
You will need a metal stainless steel keychain, as other materials like aluminum won't work.
Now it's laser time! It took me a long time to create these since each of the settings is specific to the color. If you want, you can change the settings for other colors. I also used a piece of wood to protect the base plate of the F1 Ultra. And don't forget your laser safety glasses.
Now you're done with your keychain. Good job!