Importance of air assist and how the air assist need not be high pressure, just efficient at getting air into the kerf.The same pulse test but through 10mm plywood this time.Burns a parallel hole right through.Always reinforces the need for air assist protection of the lens This one pulse at quite a long distance from the work was so explosive that debris became deposited on the lens.Demonstration (in slow motion) of a pulse burning a hole through the wood after the beam has been amplified by the lens.Yet again I go through the way light energy gets transferred to heat energy and causes the carbon in wood to sublimate into gas at 3,500C.A slow motion look at an unfocused beam pulse hitting the surface of wood.Let’s step back and look at my theory of woodcutting.Selecting 10mm plywood (albeit soft poplar) seems an unreasonable demand for a 38mm lens.The lenses that I have for all of these tests are 38.1mm focal length.
Choosing a suitably demanding test material to cut.200 Long Compound Lens Conclusion RDWorks Learning Lab 151 ~ 200 151 Let’s Zoom in on Lenses Part 3 Show More.192 New parts now available and detailed explanation of beam setting.191 Creating the Russ Spec machine part 3.190 Creating the Russ Spec machine part 2.189 Creating the Russ Spec machine part 1.187 Through the lens red dot disappointment.186 The 4th corner Puzzle and Red pointer Lies.179 Fitting the Cloudray C Series Adjustable head.170 Let’s Focus on Lenses Part 4 (First results).158 Compound Lens and Universal Engraving Nozzle.155 Oh Dear, What Nozzle and Lens do I choose?.152 Are Our Nozzles Designed Correctly?.Where it is appropriate, I warn of my error BUT in the spirit of leaving the work as an unedited record of discovery I leave you to watch ahead to that point where I begin to realize and correct those errors It must be remembered at all times that this is a video record of me learning about a technology that is very poorly documented and, in my naivety, I make (what I can now see as) lots of silly mistakes. This bullet point index has been made a year into my learning journey when I am older and wiser.
However, after being put into a psychological headlock, I have relented and with the help of Gene Uselman who has carefully created the skeleton of this index, I have added pertinent bullet points to each video to help others find elements of interest. Russ Sadler – LaserUser Legend Tutorial on how to use a laser cutter
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