Homebrew PCBs

I’m interested in results from a CO2 laser. In particular minimum trace width and width spacing.  Can you post some pictures when you get around to it?  

 

Jeff

 

From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Saturday, January 16, 2016 9:29 AM
To: Homebrew_PCBs@yahoogroups.com
Subject: RE: 3-D printer resist application? (was: Re: [Homebrew_PCBs] Anyone milling PCBs?)

 

  

That’s encouraging, I should get around to trying it.

 

The CO2  lasers most people own (the ‘eBay lasers’) have a spot size of 0.1mm – 0.3mm depending on the lens (and power).  They typically ship with a 50mm lens that has a spot of around 0.15mm.  So that’s your ‘kerf’ or the isolation around the tracks.

 

Could always play around with defocussing to vary the line width I suppose.

 

Tony

 

 

 

From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Thursday, 7 January 2016 9:03 AM
To: Homebrew_PCBs@yahoogroups.com
Subject: RE: 3-D printer resist application? (was: Re: [Homebrew_PCBs] Anyone milling PCBs?)

 







I have used this technique with spray cans of paint, and it works fine. The biggest problem I had was the lines cut were a bit narrow. At the time I had access to a big CNC system with a Q-switched YAG laser, but since I retired that is no longer the case.

 

Bob