Diode lasers are versatile tools for engraving a wide variety of materials. The specific items you can engrave depend on the power of your diode laser, but generally, here's a comprehensive list:

Woods:

• Finished Wood Products (e.g., cutting boards, picture frames)

• Unfinished Wood Products (e.g., basswood, plywood, cedar, walnut, maple)

• MDF (Medium-density fiberboard)

• Cork

Acrylics/Plastics:

• Acrylic (various colors, including clear for some effects)

• COLORboard Expressions Collection (specific brand of engravable plastic)

• Plexiglass (for illuminated signs and displays)

• Some plastics (results may vary, always test first)

Metals (with some caveats):

• Coated Metals: Powder-coated tumblers, painted metals (the laser removes the coating to reveal the metal underneath).

• Direct Engraving (often requires assistance):

  • Stainless Steel (often with a "marking spray" like Cermark, or certain acidic substances like vinegar or balsamic vinegar applied to a napkin on the surface).

  • Aluminum (especially anodized aluminum, which is essentially a coated metal).

  • Black Aluminum Business Cards

  • Some other metals may be "marked" rather than deeply engraved.

  • Note: While some diode lasers can mark metal, a fiber laser is generally preferred for direct metal engraving.

Other Materials:

• Leather

• Glass (often with a wet paper towel or masking tape to help dissipate heat and create a frosted effect)

• Slate coasters

• Stone (lighter colored stones may need to be painted black for better contrast)

• Agate (especially darker stones, may need to be pre-treated with a black marking pen)

• Paper/Cardboard

• Certain fabrics (test first, as some can melt or burn)

Important Considerations for Diode Laser Engraving:

• Power of the Laser: Higher wattage diode lasers will be able to engrave more deeply and on a wider range of materials.

• Material Color: Darker materials tend to absorb the laser energy better, leading to clearer engravings. Lighter materials might need a coating or pre-treatment.

• Focus: Proper focusing of the laser beam is crucial for a crisp, detailed engraving.

• Settings: Experimenting with speed and power settings for each material is essential to achieve the desired results.

• Ventilation: Always ensure proper ventilation when laser engraving, as some materials can produce fumes.

• Safety: Wear appropriate laser safety glasses to protect your eyes.

Diode lasers are a great entry point into laser engraving for hobbyists and small businesses, offering a good balance of capability and affordability.