Homebrew PCBs

It's used for UV exposure. 

--- On Thu, 11/12/09, javaguy11111 <javaguy11111@...> wrote:

From: javaguy11111 <javaguy11111@...>
Subject: [Homebrew_PCBs] Re: Making PCB using these new 405nm LASER Diodes
To: Homebrew_PCBs@yahoogroups.com
Date: Thursday, November 12, 2009, 3:17 PM







 



  


    
      
      
      --- In Homebrew_PCBs@ yahoogroups. com, Volkan Sahin <v_sahin@... > wrote:

>

> I've a working prototype. I'm using 150mw 405nm blue ray laser diode. Without complicated optics I can get ~3 mil trace width/space. Currently, I'm using  Dichromated PVA  based homemade photoresist.  The problem is without  polygon mirror scanner, it is very slow but result is impressive. The exposure time required for  1.5 mil spot is ~20 microseconds. 

> Volkan

> 



I assume that you are doing UV exposure as opposed to ablation as mentioned in the earlier post. 





    
     

    
    


 



  






      

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