PCB Etch Training: Difference between revisions

PCB Etch Training (view source)

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 ==Training notes==
-Calum's demo used MICROTRAK single sided boards, in 35um copper thickness, 1.6mm thick board.  You can buy them here: http://www.megauk.com/pcb_laminates.php though I think they have a minimum order, rapid electronics also sells them.  Exposed to the UV light was for 6 minutes with an acetate sheet printed at any random shop.  Developing and etch times will vary depending on temp and some other factors - but 2.5 minutes for developing is a decent place to start, and 10-20 minutes for etching.  Traces less than 10mils in width will need careful judging of exposure/development/etch times.
+Calum's demo used MICROTRAK single sided boards, in 35um copper thickness, 1.6mm thick board.  You can buy them here: http://www.megauk.com/pcb_laminates.php though I think they have a minimum order, rapid electronics also sells them.  Exposure to the UV light was for 6 minutes with an acetate sheet printed at any random shop.  Developing and etch times will vary depending on temp and some other factors - but 2.5 minutes for developing is a decent place to start, and 10-20 minutes for etching.  Traces less than 10mils in width (and also traces with less than 10 mils between them) will need careful judging of exposure/development/etch times.
 ==Upcoming sessions==