The Lightblade Learning Lab with Russ Sadler
The Lightblade Learning Lab is a series of videos that Russ did for Thinklaser Limited based on using the Lightblade 4060 Laser Cutting and laser Engraving Machine. Thinklasers Lightblade 4060 has a 400 x 600mm bed size and was supplied with a 60W EFR laser tube. In this session, Russ has a go at laser engraving anodized aluminium.
- Damage thresholds.
- The test pattern drawing (you can download this here).
- Setting and running tests to identify the damage threshold of a sheet of red paper.
- Trying the same settings on white card and adjusting the settings.
- Testing the same settings on black Perspex.
- Getting black dots on a material.
- Looking at anodized aluminium.
- Plain aluminium as a reflector.
- The anodizing process producing a surface of aluminium oxide.
- 2- and 3- stage anodizing process and the use of dyes.
- Evaporating the dye in the anodizing leave the white oxidized surface behind.
- Viewing the engraved anodized aluminium under a microscope.
- Trying different types of anodized aluminium.
- Running at different speeds and powers and looking at the results.
- Trying a 1000 pixel/inch test graphic at different speeds and powers.
- Using RDWorks on a PC connected to the machine.
- Using the ‘Read’ command to copy the machine settings from the machine to the PC.
- Changing the Scan Mode, Facula Size and Engraving Factor.
- Looking at the ammeter during a test.
- Looking at a graph of power versus current.
- Keeping the machine at very low power keeping it in the pre-ionization zone.
- Using the machine in ‘Special’ mode and looking at an oscilloscope trace of power and the
- switching on and off relative to the dots being engraved – seeing how ‘Special’ mode breaks
- each dot into 20 kHz signals. Facula sets the amount of time that the signal is on.
- Effect of varying Facula.
- Relationship between power and time.
- Comparing photos engraved on aluminium at different speeds.
My thanks go out to Tom at Thinklaser for giving permission to embed these videos on this site. If you are looking for a new laser machine from a quality supplier, then I would suggest you check out their website: www.thinklaser.com.
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Transcript for Laser Engraving Anodized Aluminium
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Last updated August 26, 2021
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