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Old 02-05-2017, 07:12 PM #1
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Default Watts vs Focus for Engraving

Hi, I started building a simple XY plotter to do some laser engraving and limited cutting. While in a rush to get the parts I needed shipped, I ordered a NUBM44 as it seemed to he the highest power laser diode that was reasonably available. (More WATTS equals More GOODER!)

Now that I’ve slowed down and started learning more, I understand that focus is just as, if not more important, than how much total work the diode can apply to a material.

What I was wondering, is there a better choice available? I don’t even have a driver for the NUBM44 yet, and I haven’t tried it, but I don’t want to spend time struggling to get it working when a better option may be available.

Looking at DTR’s site, other diodes that might be good include the:
• NUBM05 – 450nm 3.5W
• NUBM06 – 455nm 3.5W
• NUBM07e – 465nm 2.9W
• NUBM08 – 455nm 4.3W

I understand that the NUBM08 has about as bad of a divergence as the NUBM44 (per DTR’s description).

While a lower wattage, the 07e has a higher wavelength and I’ve read anecdotally that in that range, higher adsorbs more into materials and therefor cuts better. But I can’t find a lot on that.

Does anyone have any experience with any of the above diodes for engraving and cutting (card stock, balsa, wood veneer)? Thanks for any help or advice.


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Old 02-06-2017, 03:18 AM #2
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Default Re: Watts vs Focus for Engraving

Check out this post in the CNC thread over on PL with some results with the NUBM44 and the whole thread has a lot of comparisons, builds and general discussion as well.
https://www.photonlexicon.com/forums...361#post326361
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Old 02-07-2017, 06:58 PM #3
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Default Re: Watts vs Focus for Engraving

Thanks DTR, funny enough I started reading that thread before I posted, but stopped at the third page when it didn't seem to be going in the direction I needed. While the post didn't answer my question, it has helped a little and given me a few more things to look up.

Thanks for the help!
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Old 02-09-2017, 12:18 AM #4
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Default Re: Watts vs Focus for Engraving

For anyone else looking for looking into this subject, the best collection of information I've found thus far can be found here:

Diodes for cutting wood?
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