“When laser scans the graphics in two-way maybe cause the edge of the scanned graphics
uneven due to the relationship between the machine belt tensions. Therefore, increase backlash to correct it. It has the specific backlash for the certain speed. Generally, the faster the speed, the greater the backlash.” (Ref: RD Works User Manual) – Note this is known as Scan Offset Adjustment. I use both terms, however there is a difference in backlash which I plan to discuss in a future video.
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In this video I explain how you can adjust the reverse offset feature (aka backlash) in RDWorks and LightBurn to improve the quality of your engraving at set speeds.
It is important to note that these fine tuning adjustments are only made to the engraving speeds that you use most and will need to be adjusted for every speed you use. For example if you engrave regularly at 300mm/sec and you make the adjustments for the speed of 300mm/sec these adjustments only take effect when 300mm/sec are used on a layer. That means if you change the engraving speed to 299 or 301mm/sec then the reverse offset adjustments are no longer in effect.
So with that in mind, let us look at how we go about adjusting and fine tuning these to our requirements.
I have set the line interval on this test to 0.5 mm so it separates the lines and you can see them more clearly.
If the backlash is not corrected it can produce poor quality engraving. Something to note is it common for the step distance to be greater for increasing speeds, for example a 600mm/second line has a greater step and therefore each speed will need to be fine tuned individually. So it is only necessary to fine tune these reverse offset adjustments for the engraving speeds that you use.
I hope this video is useful. If you have suggestions for other videos of tips and tricks on the Co2 Laser, send me an (address below) and I will see if I can make time to produce one for that topic.
Recorded with a Logitech C922 – https://amzn.to/2NcR5Nw
Thanks for Visiting.
Until next time, take care
Cheers Matthew
(MW Laser)
Visit Matt’s Workshop at MW Laser : https://mwlaser.com.au/
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