PCB fabrication (homebrew): Difference between revisions

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[[Printed circuit board|PCBs]] rather than on reducing the cost. Making PCBs at home is much quicker, with results the same day instead of waiting weeks for a commercial fabricator, and cheaper (if you don't take the time into account). However it involves working with messy chemicals, drilling will be tedious and the overall quality wont be as good.<!-- SMD & through hole -->
== PCB layout ==
{{Main|PCB layout and design}}Although possible with tape and dry transfers, or permanent marker pen [[Electronic design automation|EDA]] software will offer schematic capture, PCB layout, ERC (electrical rule checks), DRC (design rule checks) and other features, e.g. simulating the circuit with [[SPICE]].<ref>PCB design, [http://www.ladyada.net/library/pcb/software.html Software options], ladyada.net</ref><!-- Wikibooks' Practical Electronics [http://en.wikibooks.org/wiki/Practical_Electronics/PCB_Layout PCB Layout] and [http://en.wikibooks.org/wiki/Practical_Electronics/PCB_Layout/Trace_Current_Capacity Trace Current Capacity].
== Warnings ==
Dust and fumes ...
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With SRBP use a craft knife and straight edge. Score it deeply on both sides. Clamp one or both sides between wood to prevent the board being scratched. Then snap it off. A craft knife works especially well for perforated prototyping board. Score down the center of a row of holes, line the score line up with the edge of the table, and press down quickly on the overhanging piece.<ref name="eese">[http://electronics.stackexchange.com/questions/1151/how-do-you-cut-pcb How do you cut PCB?], Electrical Engineering Stack Exchange</ref>
 
FR4 boards are much harder to cut and very hard on tools.<ref name="diyaudio">[http://www.diyaudio.com/forums/parts/62929-easiest-way-cut-pcbs.html Easiest way to cut PCB's], diyAudio forum, August 2005</ref> A PCB guillotine is the right tool for the job. Failing that use a bench shear or an office guillotine that can cut through more than 2&nbsp;mm of paper. Use a nibbling tool for non-straight cuts.<ref name="hpcb"><s>[http://groups.yahoo.com/neo/groups/Homebrew_PCBs/conversations/topics/22519 Cutting PCB], Homebrew Printed Circuit Boards Yahoo! group</s></ref><ref name="diyaudio" /> If there is going to be any dust a conventional dust mask might be insufficient protection as the dust is extremely fine. Use a vacuum cleaner to catch the dust at source. Safety glasses should always be worn.<ref name="eese" />
 
Alternately take a straight edge and secure it along the line to cut. Then take a chisel (one set aside for this), and run one of the corners along the straight edge. First pass go lightly to just get a bit of a groove dug in for the tool to follow so it wont jump out on subsequent passes. Next pass or two press hard, and dig in for a deep groove. Score on both sides. Secure the board and snap the piece off. To finish the edge make a pass or two along it with a fine file.<ref>[http://www.eevblog.com/forum/manufacture/cutting-fr4-boards/15/ Cutting FR4 boards], EEVblog forum, August 2012</ref><ref name="diyaudio" />
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* ''[http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/?ALLSTEPS Stop using Ferric Chloride etchant! (A better etching solution.)]'' by The Real Elliot, Instructables
* ''[http://www.instructables.com/id/Killer-PCBs/?ALLSTEPS Killer PCBs]'' by incoherent, Instructables
* [http://tech.groups.yahoo.com/group/Homebrew_PCBs/ Homebrew PCBs] Yahoo group
 
[[Category:PCB]]