Homebrew PCBs

On Fri, 4 Jul 2008 12:19:39 -0700 (PDT), you wrote:

>What do you use to make a white silkscreen ?

It's toner transfer onto the board, then a white film available from
pulsar (www.pulsar.gs).

Avoid having the stuff over traces and it does much better.  I
recommend putting it on before hole drilling and even before trimming
the board, easier to have things to hold onto on the edges.

They have directions on the website.

Harvey

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>--- On Fri, 7/4/08, Harvey White <madyn@...> wrote:
>From: Harvey White <madyn@...>
>Subject: Re: [Homebrew_PCBs] Eyelet press recommendation
>To: Homebrew_PCBs@yahoogroups.com
>Date: Friday, July 4, 2008, 7:01 PM
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>            On Fri, 4 Jul 2008 13:14:10 -0500, you wrote:
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>>>>I use eyelets (0.050 diameter), copper, and then separate vias
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>>What do you mean "separate vias" ?
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>A via is used only to connect the top and bottom layers, but not at a
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>parts lead.  That way, I do not have to worry about the hole in the
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>eyelet.  
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>>>>allows me to use a small (!) ball peen hammer and a block of aluminum
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>>>> or steel as an anvil
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>>can you expand a bit here ? I assume the piece of steel is flat, and
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>>you place your PCB with
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>>the eyelet in place on top of it.
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>That's correct, rolled side down, of course.
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>>Then you use the hammer to form the other side of the eyelet ? Do you
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>>use any other tool along with
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>>the hammer to punch on the eyelet and form it ? or just the hammer is enough ?
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>The ball peen hammer is enough, I use something about 5 oz or so, and
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>the round end.  With a little practice, you'll swage the end over
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>nicely without killing anything.
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>Pictures of the board design (not the board) are here.
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>You want to note the blowups at the bottom.  I've arbitrarily made all
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>the vias square.
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>http://www.dragonwo rks.info/ Electronics/ making%20PC% 20boards/ pc_board_ design.htm
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>>What specific hammer do you use ( how small ). I am interested.
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>>You don't happen to have any photos do you ?
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>http://www.dragonwo rks.info/ CAD-CAM-CNC/ xyzr%20table/ XYZR%20Table% 20Controller. htm
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>Has the start, but you really want part two, assuming that part 1
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>makes interesting enough reading.
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>I can go take a couple of pictures if you need them.
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>Harvey
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>>Thanks
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