[ML-General] laser

[smeeon at gmail.com]

Likely why Norm has experienced no problem while others have is that those dark *worn* spots drift around based on the position of the nozzle on the X Y of the bed. So if people often cut in the lower right corner, then the top left would cut better. 

It’s also likely if the alignment is still a bit off this could have identical issues. While the beam is *mostly* hitting the nozzle aperture in the lower left or lower right quadrant, the beat might be fully entering the nozzle aperture in the upper left or upper right quadrant. This can be detected by putting your hand on the nozzle aperture after a long cut and you can feel the warmth of the metal from being bombarded with the unfocused Infrared beam. 

Lastly, we have replacement mirrors and focusing lenses for a brand new nozzle. But they’ve not been installed yet. I think people were waiting on me to do that. I apologize for letting it slip off my radar. I may be able to come by this week and knock it out, also change the lens and mirrors. 


- Dianna Valdez

> On Nov 18, 2019, at 11:41 AM, Wesley Swift <wesleyswift2 at gmail.com> wrote:
> 
> 
> Ok.  ZnSe is special but my recommendations still stand.
> 
> https://www.lmiab.se/en/znse_cleaning
> 
> Wes
> 
> 
>> On Sun, Nov 17, 2019, 6:04 PM Ryan Coons <ryancoonsyhg at gmail.com> wrote:
>> DO NOT USE RUBBING ALCOHOL ON OPTICS.
>> 
>> Propylnol can destroy the anti-reflective coatings and other treatments.  Methanol (wood alcohol) should be used instead. Clear vinegar is acceptable for use on the ZnSe optics in CO2 laser systems.
>> 
>>> On Sun, Nov 17, 2019, 2:57 PM Wesley Swift <wesleyswift2 at gmail.com> wrote:
>>> I am fond of q-tips and rubbing alcohol.   Shake off excess alcohol and make a pass on the glass.  Don't rub.   Use each end for one pass only and toss it or use to clean non optical parts.   
>>> Microfiber is also great  stuff but q-tips are better with liquids. Don't rub.
>>> 
>>> Wes 
>>> 
>>>> On Sat, Nov 16, 2019, 10:22 PM Bradley Marshall <sk8rbradley at gmail.com> wrote:
>>>> For the laser at work we just use some vinegar and a qtip. They told me to specifically not wipe in circles as it is apparently bad for the lens.
>>>> 
>>>>> On Sat, Nov 16, 2019, 10:19 PM Joe Iacuzzo <joe.iacuzzo at gmail.com> wrote:
>>>>> Can anyone let me know how easy or difficult it is to clean the laser lens? When we went to use it I noticed that the fan on the laser was off. I turned it back on but the cuts weren't as clean as they have been. I believe that it may have allowed for residue buildup on the lens. I didn't want to mess with it unless I was certain I knew what I was doing.
>>>>> Joe
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>> _______________________________________________
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> _______________________________________________
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