http://bloominglabs.org/index.php?title=PCB_Etching&feed=atom&action=history 2013-05-23T18:10:18Z Revision history for this page on the wiki MediaWiki 1.20.2 http://bloominglabs.org/index.php?title=PCB_Etching&diff=938&oldid=prev 2012-09-25T15:02:46Z

<p></p> <table class='diff diff-contentalign-left'> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 15:02, 25 September 2012</td> </tr><tr><td colspan="2" class="diff-lineno">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>We need a fast and reliable method of PCB etching for the space, I intend to build a bubbler etcher and get us setup to use air regenerated acid cupric chloride. <del class="diffchange diffchange-inline">First some </del>research:</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>We need a fast and reliable method of PCB etching for the space, I intend to build a bubbler etcher and get us setup to use air regenerated acid cupric chloride. &#160;</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>&#160;</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">Presently we have an acrylic &quot;window bubbler&quot; system where the etching solution can be filled in without having to handle the solution as much as well as allowing much less fluid to be used. It also incorporates a bubbler for agitation. It needs to be tested and directions need to be written up for it.</ins></div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>&#160;</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>&#160;</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>&#160;</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">Some </ins>research:</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>==== Chemicals ====</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>==== Chemicals ====</div></td></tr> <tr><td colspan="2" class="diff-lineno">Line 33:</td> <td colspan="2" class="diff-lineno">Line 39:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.youtube.com/watch?v=DXjWZ9gJ4XE http://www.youtube.com/watch?v=DXjWZ9gJ4XE]</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.youtube.com/watch?v=DXjWZ9gJ4XE http://www.youtube.com/watch?v=DXjWZ9gJ4XE]</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.instructables.com/id/DIY-PCB-Bubble-Etch-Tank/ http://www.instructables.com/id/DIY-PCB-Bubble-Etch-Tank/]</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* [http://www.instructables.com/id/DIY-PCB-Bubble-Etch-Tank/ http://www.instructables.com/id/DIY-PCB-Bubble-Etch-Tank/]</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">[[Category:dosman projects]] [[Category:tools]]</ins></div></td></tr> </table>

Dosman http://bloominglabs.org/index.php?title=PCB_Etching&diff=626&oldid=prev 2011-08-22T04:47:39Z

<p>New page: We need a fast and reliable method of PCB etching for the space, I intend to build a bubbler etcher and get us setup to use air regenerated acid cupric chloride. First some research: ====...</p> <p><b>New page</b></p><div>We need a fast and reliable method of PCB etching for the space, I intend to build a bubbler etcher and get us setup to use air regenerated acid cupric chloride. First some research:<br /> <br /> ==== Chemicals ====<br /> * [http://members.optusnet.com.au/~eseychell/PCB/etching_CuCl/index.html http://members.optusnet.com.au/~eseychell/PCB/etching_CuCl/index.html]<br /> <br /> * [http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/ http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/]<br /> <br /> From the instructable:<br /> &lt;pre&gt;<br /> Bottom Line: <br /> <br /> Two things to maintain: CuCl2 levels and acid levels.<br /> <br /> CuCl2: After all the peroxide is used up, and the solution starts turning brownish, you'll have to add oxygen <br /> to regenerate the solution again: toss in a few more capfuls of peroxide or bubble air through the solution or <br /> swirl it around vigorously, or just pour it into an open container and wait. It's easy to tell when you're ready to <br /> etch again, because the solution turns green. <br /> <br /> It's also impossible to add too much oxygen by adding air, so bubble/swirl to your heart's content. If you're <br /> using peroxide to add oxygen, be sparing -- a little goes a long way, and it's mostly water so you're diluting <br /> your etchant by adding it.<br /> <br /> Acid: Note that HCl is being consumed in the starter etchant and the regeneration reactions. So we're going to <br /> have to add a bit more acid as time goes by. If you notice that it's harder to re-green your brown etchant, it's <br /> probably time to start thinking acid. <br /> <br /> I've tried the titration described on Adam's site a couple times, and it's pretty easy but requires an accurate scale <br /> and pure lye (back to the hardware store...). It's easier to just toss in a capful of acid every few batches of boards, <br /> which seems to do the trick for me. <br /> &lt;/pre&gt;<br /> <br /> ==== Bubbler Bath ====<br /> * [http://www.youtube.com/watch?v=DXjWZ9gJ4XE http://www.youtube.com/watch?v=DXjWZ9gJ4XE]<br /> * [http://www.instructables.com/id/DIY-PCB-Bubble-Etch-Tank/ http://www.instructables.com/id/DIY-PCB-Bubble-Etch-Tank/]</div>

Dosman