Comments on: Copper Clad Board + Ferric Chloride + Laser Printer = FUN! http://www.joeyhagedorn.com/2006/05/06/copper-clad-board-ferric-chloride-laser-printer-fun All about Joey and Things and Stuff Wed, 19 Nov 2008 18:02:46 +0000 http://wordpress.org/?v=2.5 By: Chad Weider http://www.joeyhagedorn.com/2006/05/06/copper-clad-board-ferric-chloride-laser-printer-fun#comment-63 Chad Weider Sun, 07 May 2006 06:02:26 +0000 http://www.joeyhagedorn.com/2006/05/06/copper-clad-board-ferric-chloride-laser-printer-fun/#comment-63 Awesome - should be really helpful for any folk who choose to do likewise. BTW - I must say those pictures do look very nice. Awesome - should be really helpful for any folk who choose to do likewise.

BTW - I must say those pictures do look very nice.

]]> By: Scott Dixon http://www.joeyhagedorn.com/2006/05/06/copper-clad-board-ferric-chloride-laser-printer-fun#comment-62 Scott Dixon Sat, 06 May 2006 21:01:56 +0000 http://www.joeyhagedorn.com/2006/05/06/copper-clad-board-ferric-chloride-laser-printer-fun/#comment-62 nice, closing the loop. that i get. nice, closing the loop. that i get.

]]> By: Joey http://www.joeyhagedorn.com/2006/05/06/copper-clad-board-ferric-chloride-laser-printer-fun#comment-61 Joey Sat, 06 May 2006 20:20:52 +0000 http://www.joeyhagedorn.com/2006/05/06/copper-clad-board-ferric-chloride-laser-printer-fun/#comment-61 Scott, I did all this stuff to make the parts in the laser galvanometer that feed back the position to the amplifier, closing the loop essentially. The copper surfaces on the PCBs act like plates on a capacitor, actually 2 capacitors. The system is designed after the ELM Chan galvanometer. You can see a illustration of how it is supposed to work in Figures <a href="http://elm-chan.org/works/vlp/report_e.html">4a-4c</a>. It is kind of obstructed by the drawing, but you can kind of see it in the CAD rendering of the whole assembly in the Galvanometer picture album. Ferric Chloride isn't actually too hard to get because of its use in this application. It is however, hard to buy online because its dangerous to ship. You can go get it at <a href="http://www.radioshack.com/product/index.jsp?productId=2102868" rel="nofollow">Radio Shack</a> or my preferred source, at <a href="http://www.frys.com/" rel="nofollow">Fry's Electronics</a>. Scott,
I did all this stuff to make the parts in the laser galvanometer that feed back the position to the amplifier, closing the loop essentially. The copper surfaces on the PCBs act like plates on a capacitor, actually 2 capacitors. The system is designed after the ELM Chan galvanometer. You can see a illustration of how it is supposed to work in Figures 4a-4c. It is kind of obstructed by the drawing, but you can kind of see it in the CAD rendering of the whole assembly in the Galvanometer picture album.

Ferric Chloride isn’t actually too hard to get because of its use in this application. It is however, hard to buy online because its dangerous to ship. You can go get it at Radio Shack or my preferred source, at Fry’s Electronics.

]]> By: Scott Dixon http://www.joeyhagedorn.com/2006/05/06/copper-clad-board-ferric-chloride-laser-printer-fun#comment-60 Scott Dixon Sat, 06 May 2006 18:12:07 +0000 http://www.joeyhagedorn.com/2006/05/06/copper-clad-board-ferric-chloride-laser-printer-fun/#comment-60 I'm not really sure what all of that was done for. But, whatever it is, it sure is wicked looking. Like, where do you get your hands on a tub of ferric chloride? I’m not really sure what all of that was done for. But, whatever it is, it sure is wicked looking.

Like, where do you get your hands on a tub of ferric chloride?

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