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???
12/31/05 17:05
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#106289 - Time consuming
Responding to: ???'s previous message
Kai said:
Is the etch resist pencil expensive where you live?


Dear Kai,

Its not that much costly, but it is time consuming to coat the ink for larger areas, say a 6"x4" layer. I was using this etch resistant ink method for signal traces, sometimes, the tracks get etched away.

The toner transfer method is robust in this sense, the tracks are intact in FeCl2.

I once tried the method of toner transfer for double sided boards also. I took the print out of both the layer separately, and applied heat to transfer. The biggest challenge is the alignment of top and bottom layers: even an 1mm offset will completely ruin the board.

Regards,
Vignesh

PS: Steve, should I have posted this thread in Chat forum?

List of 51 messages in thread
TopicAuthorDate
Second layer of PCBs            01/01/70 00:00      
   hmmm            01/01/70 00:00      
      Another idea...            01/01/70 00:00      
         A very good idea!            01/01/70 00:00      
         A clarification            01/01/70 00:00      
            This way?            01/01/70 00:00      
            No problem            01/01/70 00:00      
               better...            01/01/70 00:00      
                  That's the solution            01/01/70 00:00      
   Farady Cage ?            01/01/70 00:00      
      Oops!            01/01/70 00:00      
         Single double-sided PCB !            01/01/70 00:00      
            Depends            01/01/70 00:00      
               Layer            01/01/70 00:00      
      wow 12 replys in 1 hour !//            01/01/70 00:00      
         Yeah!            01/01/70 00:00      
   Close and solid ground plane            01/01/70 00:00      
      Thank you!            01/01/70 00:00      
   Some pics            01/01/70 00:00      
      Your Supply tracks are too thin            01/01/70 00:00      
         Thickness            01/01/70 00:00      
      Decoupling caps?            01/01/70 00:00      
      Top or botttom            01/01/70 00:00      
         Draw it            01/01/70 00:00      
            Ink != Etch resist            01/01/70 00:00      
               Indeed            01/01/70 00:00      
                  Time consuming            01/01/70 00:00      
                     Special ink            01/01/70 00:00      
               I would...            01/01/70 00:00      
                  is it for?            01/01/70 00:00      
                     Is because...            01/01/70 00:00      
                        Cant get anything better!            01/01/70 00:00      
                           It's easy to find all my posts...            01/01/70 00:00      
         DIP => Bottom Routing, Top Plane            01/01/70 00:00      
            Great!            01/01/70 00:00      
               Drilling is easier            01/01/70 00:00      
                  Another doubt            01/01/70 00:00      
                     Remedies            01/01/70 00:00      
                        My idea            01/01/70 00:00      
                           Not a good idea for fast digital circuit            01/01/70 00:00      
                              Try SMD            01/01/70 00:00      
                                 A new lowcost direct PCB printer ?            01/01/70 00:00      
                              SMD            01/01/70 00:00      
                                 The key to success is flux            01/01/70 00:00      
                                    Interesting link            01/01/70 00:00      
                                       Kai, you are right            01/01/70 00:00      
                                          Highly interesting article!            01/01/70 00:00      
                     Soldering            01/01/70 00:00      
   For your views..            01/01/70 00:00      
      Without schematic...            01/01/70 00:00      
         Schematic            01/01/70 00:00      

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