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#1
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New at PCB etching
When tracing out the connections on a regular copper-clad board that
will be etched with ferric chloride, is it really necessary to use one of those "special" ink-resist pens? Can't I just use like a.. Sharpie? Thanks |
#2
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New at PCB etching
"SpicyBrown" wrote in message ...
When tracing out the connections on a regular copper-clad board that will be etched with ferric chloride, is it really necessary to use one of those "special" ink-resist pens? Can't I just use like a.. Sharpie? Thanks Sharpies work great! Put it on as thick as you can tho! Tim |
#3
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New at PCB etching
Excellent! Thanks, I'm off to try it right now...
On Sun, 8 Feb 2004 22:09:56 -0600, "Tim Dicus" wrote: "SpicyBrown" wrote in message ... When tracing out the connections on a regular copper-clad board that will be etched with ferric chloride, is it really necessary to use one of those "special" ink-resist pens? Can't I just use like a.. Sharpie? Thanks Sharpies work great! Put it on as thick as you can tho! Tim |
#4
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New at PCB etching
On Mon, 09 Feb 2004 04:08:05 GMT, SpicyBrown
wrote: When tracing out the connections on a regular copper-clad board that will be etched with ferric chloride, is it really necessary to use one of those "special" ink-resist pens? Can't I just use like a.. Sharpie? Basically..sure...You need to go over a couple of times, it 'washes' away fairly easily.. another readily available choice is the Staedler Mars red [#3 if memory hasn't failed??] enjoy.. |
#5
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New at PCB etching
Bob Masta wrote in message ... On Mon, 09 Feb 2004 04:48:54 GMT, SpicyBrown wrote: Excellent! Thanks, I'm off to try it right now... On Sun, 8 Feb 2004 22:09:56 -0600, "Tim Dicus" wrote: "SpicyBrown" wrote in message ... When tracing out the connections on a regular copper-clad board that will be etched with ferric chloride, is it really necessary to use one of those "special" ink-resist pens? Can't I just use like a.. Sharpie? Thanks Sharpies work great! Put it on as thick as you can tho! Tim Just make sure you use black only, other colors don't seem to work very well if at all. Bob Masta dqatechATdaqartaDOTcom I use Humbrol enamel intended for model-making. By using a fine "pencil" signwriting brush I can flow it on nicely and form smooth-edged tracks and pads etc, quite easily. Nitromors paint stripper removes it OK afterwards, as long as you don't leave it on long enough to attack the board. |
#6
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New at PCB etching
When tracing out the connections on a regular copper-clad board that
will be etched with ferric chloride, is it really necessary to use one of those "special" ink-resist pens? Can't I just use like a.. Sharpie? Thanks Those etch-resist pens ARE Sharpies (with another name on them). Also, I stopped using ferric chloride after I discovered ammonium persulfate. Unlike ferric chloride, it never becomes opaque -- you can see the PC board even when the solution is all-but dead. It's widely available (except thru Radio Shack). Bryan |
#7
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New at PCB etching
On Mon, 16 Feb 2004 08:43:01 GMT, "Bryan Swadener"
wrote: When tracing out the connections on a regular copper-clad board that will be etched with ferric chloride, is it really necessary to use one of those "special" ink-resist pens? Can't I just use like a.. Sharpie? Thanks Those etch-resist pens ARE Sharpies (with another name on them). Also, I stopped using ferric chloride after I discovered ammonium persulfate. Unlike ferric chloride, it never becomes opaque -- you can see the PC board even when the solution is all-but dead. It's widely available (except thru Radio Shack). Bryan Bryan: Many years ago in the shop I worked in then we tried ammonium persulphate, but it seemed to attack the Sharpie traces. Do you have a special trick to avoid this, or have Sharpies maybe changed their formula in the intervening decades? Thanks! Bob Masta dqatechATdaqartaDOTcom D A Q A R T A Data AcQuisition And Real-Time Analysis www.daqarta.com |
#8
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New at PCB etching
"Bob Masta" wrote in message
... On Mon, 16 Feb 2004 08:43:01 GMT, "Bryan Swadener" wrote: When tracing out the connections on a regular copper-clad board that will be etched with ferric chloride, is it really necessary to use one of those "special" ink-resist pens? Can't I just use like a.. Sharpie? Thanks Those etch-resist pens ARE Sharpies (with another name on them). Also, I stopped using ferric chloride after I discovered ammonium persulfate. Unlike ferric chloride, it never becomes opaque -- you can see the PC board even when the solution is all-but dead. It's widely available (except thru Radio Shack). Bryan Bryan: Many years ago in the shop I worked in then we tried ammonium persulphate, but it seemed to attack the Sharpie traces. Do you have a special trick to avoid this, or have Sharpies maybe changed their formula in the intervening decades? Thanks! Bob Masta dqatechATdaqartaDOTcom D A Q A R T A Data AcQuisition And Real-Time Analysis www.daqarta.com I started using amonium persulfate at the same time I started making boards using photosensitive etch resist. I can't recall whether or not I've used a Sharpie with amonium persulfate. Bryan |
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