White engraving or inversion engraving.
To obtain white engraving, you must remove thin dark layer of the coating from product and prevent charring of wood.
To achieve this effect, high speed and low laser power are needed.
Preparing wooden blank
Apply dark stain to wooden blank (plywood, veneer…) then varnish.
You can use paint instead of stain.
Laser machine parameters*
*Suitable for 40 watt laser machine
• Speed: 300-400 mm / sec
• Maximum power: 12-13%
• Interval: 0.05-0.1 mm
You may to play with parameters of your laser machine.
After fast and low-power engraving almost no soot on product.
Soot from the cutted edges of the product can be easily removed with damp sponge soaked in water.
Apply varnish to product after drying.
Effect of white (inversion) engraving is stunning.
In this way we are make many projects.