X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f X-Recipient: geda-user AT delorie DOT com Subject: Re: [geda-user] DIY PCBs To: geda-user AT delorie DOT com References: <20170617081144 DOT 16928 DOT qmail AT rahul DOT net> From: "John Griessen (john AT ecosensory DOT com) [via geda-user AT delorie DOT com]" Message-ID: Date: Sat, 17 Jun 2017 16:38:47 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <20170617081144.16928.qmail@rahul.net> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Reply-To: geda-user AT delorie DOT com Errors-To: nobody AT delorie DOT com X-Mailing-List: geda-user AT delorie DOT com X-Unsubscribes-To: listserv AT delorie DOT com Precedence: bulk On 06/17/2017 03:11 AM, John Conover wrote: > I made a web page for the way I make DIY quick turn PCBs, consistently > with 10 mil line widths, in under 30 minutes. It is specific to > geda(1), gschem(1), and, pcb(1), (it is doubtful that any other system > would work very well-but there is a lot of information there on how to > do it, if one wants to.) > > Most of my work is in linear/analog, so its kind of tailored that way. > > http://www.johncon.com/john/PCB/ Thanks, I do similar, although I never thought of the developer testing, only exposure -- that makes for a nice sweet spot determination. I also use air regeneration of the CuCl2, which might even reduce the amount of HCl needed, but that's not a very big cost anyway. It does skip the need for any H2O2 buying except to get started quickly. Air bubbling of copper wire under HCl will get you a charged up CuCl2 bath eventually. DJ Delorie gets credit for the CuCl2 chemistry efficiency details.