Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
???
10/03/07 20:26
Read: times


 		 #145328 - Multi-layer
Responding to: ???'s previous message
Joseph Hebert said:
I even once had a wire-wrapping tool, though I do not share Richard's admiration for the technique.

What always gets me is the enormous systems that were wirewrapped - was this all pre-multilayer PCB, or was the reliability of multi--layer still suspect - double sided mil-spec board here has to use eyelets for vias until recently I am told.


The only other technique I can think of off hand, that's definitely gone out of fashion in my book, is the use of dry-transfer strips as etch resist applied directly to the copper.

How about the crepe tape on vinyl process ?

Steve



List of 60 messages in thread
TopicAuthorDate
Wednesday survey            01/01/70 00:00      
   Yes            01/01/70 00:00      
      huh            01/01/70 00:00      
         I do!            01/01/70 00:00      
            can you two please hint on tag-strips?            01/01/70 00:00      
               The clue is in the name            01/01/70 00:00      
                  Another hint            01/01/70 00:00      
         nor do I!            01/01/70 00:00      
         nor do I!            01/01/70 00:00      
         "Printed" Circuit Boards            01/01/70 00:00      
            Tagstrips!            01/01/70 00:00      
   Yes            01/01/70 00:00      
      Pictures coming            01/01/70 00:00      
   Yes            01/01/70 00:00      
      Multi-layer            01/01/70 00:00      
         I do not know the reason, but I experienced            01/01/70 00:00      
            It was commonly done by hand for one-offs            01/01/70 00:00      
               Not Always            01/01/70 00:00      
                  true, however            01/01/70 00:00      
         Improved reliability            01/01/70 00:00      
   Yes            01/01/70 00:00      
   yes            01/01/70 00:00      
   yes            01/01/70 00:00      
   Not just for rapid prototyping ...            01/01/70 00:00      
      NASA used it too!            01/01/70 00:00      
   Yes            01/01/70 00:00      
   Old enough to remember delivering Machine Wrap            01/01/70 00:00      
      in a week or so ...            01/01/70 00:00      
      modified wrap            01/01/70 00:00      
   re:survey            01/01/70 00:00      
      another 10 points            01/01/70 00:00      
         IDCs used for IDB? Maybe?            01/01/70 00:00      
         re:IDC            01/01/70 00:00      
            DIL sockets?            01/01/70 00:00      
               re:DIL            01/01/70 00:00      
                  I remember these            01/01/70 00:00      
                     I agree            01/01/70 00:00      
                        there were several influences            01/01/70 00:00      
                  but this looks like - OK let's call it DIP...            01/01/70 00:00      
                     Density            01/01/70 00:00      
                        this is beyond my imagination            01/01/70 00:00      
                           skipped slots            01/01/70 00:00      
                              In some backplanes, they interfere            01/01/70 00:00      
                              Oh I see. Thanks.            01/01/70 00:00      
               DIL = DIP            01/01/70 00:00      
   How many points for these?            01/01/70 00:00      
      +10 points each...            01/01/70 00:00      
      How about "multiwire"            01/01/70 00:00      
         I remember those            01/01/70 00:00      
            i remember multiwire            01/01/70 00:00      
               Same as wirestitch and stitchweld            01/01/70 00:00      
   yes            01/01/70 00:00      
   Some serious wire-wrapping for you...            01/01/70 00:00      
      thanks            01/01/70 00:00      
      I see the wires, but where's the wrapping?            01/01/70 00:00      
         WHAT??? You want details?            01/01/70 00:00      
         some wirewrapping here...            01/01/70 00:00      
            God all mighty            01/01/70 00:00      
               and how much time doe is take...            01/01/70 00:00      
   Low cost, high volume wire wrapping            01/01/70 00:00      

Back to Subject List