please dont rip this site

Idea: Printing SMT Circuit Boards with solder bleed traces between tiny copper islands.

Imagine a PCB filled with a pattern of tiny copper squares, each seperated from its neighbors by a thin gap of perhaps 5 mils. Anyone who has soldered a fine pitch board knows that such a gap is easy to accidentally fill with solder when it bleeds from one pad to the next. What if we used that to our advantage; we could write our traces and pads with solder on a heated pattern of copper islands.

Given such a board with this fine copper pattern, it could be heated in an oven or on a hotpad to a temperature where solder would melt when touching the pad. Now take fine diameter solder and draw on the board where you want the pads and traces. This could easily be automated with a CNC mill and a solder feeding head.

Once the solder is layed down on the pad area, the board could be cooled, then flux paste applied where the component pads will be laid. After component placement, which again could be automated via a pick n place machine, the board would be reflowed to complete the assembly.

This method would lend itself best to single sided, surface mount designs, but perhaps a premade pattern of through hole pads could be provided and incorporated as need be into the design of each board or holes could be drilled and wires placed through to connect sides where needed.

The advantage is that the cost of each board would be minimal since the "island" pattern could be manufactured in large quantities, and each board could be different lending itself to quick prototyping and customized circuitry. Automation can easily be applied.


file: /Techref/idea/solderbleedtraces.htm, 1KB, , updated: 2018/9/13 10:40, local time: 2024/10/4 00:42,
TOP NEW HELP FIND: 
3.238.82.77:LOG IN
©2024 PLEASE DON'T RIP! THIS SITE CLOSES OCT 28, 2024 SO LONG AND THANKS FOR ALL THE FISH!

 ©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it! / MAKE!

<A HREF="http://www.piclist.com/techref/idea/solderbleedtraces.htm"> PCB, circuit prototyping service, surface mount, solder, CNC</A>

After you find an appropriate page, you are invited to your to this massmind site! (posts will be visible only to you before review) Just type a nice message (short messages are blocked as spam) in the box and press the Post button. (HTML welcomed, but not the <A tag: Instead, use the link box to link to another page. A tutorial is available Members can login to post directly, become page editors, and be credited for their posts.


Link? Put it here: 
if you want a response, please enter your email address: 
Attn spammers: All posts are reviewed before being made visible to anyone other than the poster.
Did you find what you needed?

  PICList 2024 contributors:
o List host: MIT, Site host massmind.org, Top posters @none found
- Page Editors: James Newton, David Cary, and YOU!
* Roman Black of Black Robotics donates from sales of Linistep stepper controller kits.
* Ashley Roll of Digital Nemesis donates from sales of RCL-1 RS232 to TTL converters.
* Monthly Subscribers: Gregg Rew. on-going support is MOST appreciated!
* Contributors: Richard Seriani, Sr.
 

Welcome to www.piclist.com!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .