Homebrew PCBs

I don't know this stuff, but it seems it has very low (no) adhesion to the base
material and, therefore, will not be useful as a resist.
if you are 'drawing' the board, why use this stuff instead of a simple ink or
paint as resist? the CNC would work as a flatbed plotter...


--- Brian Gracia <bgracia1@...> wrote:

> Hello,
> 
> I just joined this group because I am getting back into 
> electronics.  I was using my Google Fu to search the web on how a 
> hobbist can do smt boards at home.  While searching, I came 
> across  some companies that showed small cnc machines like the router 
> type that had a small needle in place of the router.  The machine 
> deposited various liquids on the boards like solder paster and 
> silkscreen paste and epoxy encapsulation resin.
> 
> My question is has anyone tried this method with photoreactive 
> resin?  They use it to make stamps for scrapbook images amoungst 
> others.  Here is a link: http://www.granthams.com
> He sells kits.  Their are other sites on the net where you can 
> purchase this resin.
> 
> I have not built my cnc machine yet, I do have the electronics and 
> motors from HobbyCNC built.  I am in between jobs so held off to make 
> the money last.  I was thinking about putting this stuff in a syringe 
> with a small needle, where the point had been machined flat, and 
> using a cnc to deposit a small thin layer on the board.  Then all you 
> should have to do is stick it under light.  Etch and then use a 
> plastic brillo pad to remove the rubber.
> 
> Brian G. 


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