Laser cutter parameters engraving

These are the parameters to use when engraving various materials with my K40 laser. They have been discovered by trial and error.

Stamp rubber (2.3 mm) #

• Power: 75%
• Speed: 175 mm/s
• Air: yes
• Masking: yes

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Anodized aluminium keychain bottle opener #

• Power: 70%
• Speed: 300 mm/s
• Air: no
• Masking: no

potential source

Pencils #

• Power: 50%
• Speed: 500 mm/s
• Air: no
• Masking: no