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+PCB manufacturing makes raw printed circuit boards.
+Later some other process (hand-assembly or pick-and-place assembly)
+solders the various parts to the board.
+The result is a completed printed circuit board assembly, such as
+the [[Gen7 Board-ARM v2.0]]
+and various [[generation 7 electronics#extension boards]].
+Some people find trying to get a RepRap to make "its own PCBs" an interesting challenge.
+In particular, as of 2015 all known self-fabrication processes require relatively wide traces and relatively wide spaces between the traces -- far too wide for most modern CPUs with their tightly-packed pins.
+But with careful tuning, it is possible for a RepRap-based desktop CNC mill to make spaces and traces narrow enough to fit a few modern CPUs with relatively widely-spaced pins.
+Traumflug has successfully milled RepRap PCBs on a Wolfstrap.
+==== Further reading ====
+Visolate: software for generating G-code for manufacturing printed circuit boards (PCBs) by isolation milling.
+http://github.com/Traumflug/Visolate
+Poul-Henning Kamp.
+"Height probing for PCB isolation routing with Eagle/pcb-gcode".
+http://phk.freebsd.dk/CncPcb/
+"PCB designing and isolation milling using only free Software".
+http://www.instructables.com/id/PCB-designing-and-isolationmilling-only-using-free/
+"A Step-By-Step Guide to Isolation Milling A PCB".
+http://www.ofitselfso.com/LineGrinder/LineGrinderHelp/LineGrinderHelp_IsolationMillingStepByStep.html
+List of PCB manufacturers.
+OSH Park is paticularly hobbyist friendly.
+http://www.opencircuits.com/PCB_Manufacturers
+Bernhard Kubicek.
+"notes on PCB milling on repraps."
+http://bernhardkubicek.soup.io/post/244415439/notes-on-PCB-milling-on-repraps
+''(FIXME: has this "trapezoidal lasercutable pcb mill" or any other PCB mill been released as open hardware?)''
+"First PCB milling success"
+http://people.openmoko.org/werner/cnc/pcb-1st/
+implies that adding oil helps PCB milling.
+Long discussion about milling PCBs on open hardware:
+http://www.contraptor.org/forum/t-192541#post-755646
+Fabio is an Arduino compatible microcontroller board,
+designed to be milled using a 1/64th inch end mill out of a single layer PCB.
+http://makeyourbot.wikidot.com/fabio-1-1

pcb_manufacturing.txt · Last modified: 2018/05/27 16:10 (external edit)