Re the alphabet soup URLs. My apologies. I learned a couple of things
from this episode. I had done a quick search, copy and paste from
Google for the articles I had done earlier. They pasted fine as HTML
links hiding the goobly gook underneath the link. That coupled with
another action -- I emailed using a Gmail account. It now appears that
Gmail didn't repeat back my tech group message from Yahoo, probably due
to matching source and destination email addresses in order to save
server disk storage space. So I wasn't aware of the terrible mess the
URLs were until someone else commented on it. I will be more careful in
the future.
Regards,
Charles R. Patton
On 4/17/2012 5:04 AM, Donald H Locker wrote:
>
> Those file URLs with long strings of apparently random characters are
> temporary and disappear after a few seconds to a few minutes.
>
> The file in in the group's files section:
> <http://tech.groups.yahoo.com/group/Homebrew_PCBs/files/> top
> drill-bottom view drill press.pdf (yet another good example for naming
> files without spaces in them.)
>
> Donald.
> --
> ∗Plain Text∗ email -- it's an accessibility issue
> () no proprietary attachments; no html mail
> /\ ascii ribbon campaign - <www.asciiribbon.org>
>
> ----- Original Message -----
> > From: "Charles R. Patton" <charles.r.patton@...
> <mailto:charles.r.patton%40IEEE.ORG>>
> > To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com
> <mailto:Homebrew_PCBs%40yahoogroups.com>>
> > Sent: Monday, April 16, 2012 8:29:43 PM
> > Subject: Re: [Homebrew_PCBs] PCB Drilling Viewer
> > I described setting up a web cam to view the bottom side of the PCB
> > while drilling from the top side. I use a sacrificial piece of plastic
> > that I drill first so it indicates exactly where the drill is hitting.
> > That eliminates a host of problems such as boresight error.
> > Please see:
> > http://tech.dir.groups.yahoo.com/group/Homebrew_PCBs/message/28429
> > and I put pictures in
> > top drill-bottom view drill press.pdf
> >
> <http://f1.grp.yahoofs.com/v1/gLKMT4q13XDxiIgzZmifkT0BbqsHILZSk-F9mp_Cbr7hpFKpq63z_9WqZR4coro9pOPQAfkru-t0SpL73lbMtWYcu0eHtV598w/top%20drill-bottom%20view%20drill%20press.pdf>
> > in the files section.
> >
> > On 4/16/2012 3:39 PM, Simao Cardoso wrote:
> > >
> > > bebx2000 wrote:
> > > >
> > > > Could anyone offer an opinion on this drilling fixture?
> > >
> > > Hi, i remember some old discussions on this list about a drill press
> > > that I could never understand how it works, until saw that image. I
> > > tried to search the thread but i lack time right know.
> > >
> > > If i understand it right, and in my modest opinion, it intends to
> > > drill
> > > the single sided board from the non copper side, because the drill
> > > bit
> > > tends to slide if drilled from the copper (if it hasn't a etch hole
> > > for
> > > drilling) and avoids the annoying burrs on copper. It has a light to
> > > illuminate the bottom side of the board and when it cross the glass
> > > it
> > > will behave like a mirror to your point of view, because it has more
> > > light from the other side, and you see the down side of the pcb with
> > > the
> > > alignment hole. There are who adds a mirror so you can see the
> > > bottom of
> > > the pcb from above, in a comfortable position.
> > >
> > > But i, before the cnc, just bought a proxxon drill stand and both a
> > > collet chuck proxxon spindle for carbide bits and another with 3 jaw
> > > keyless chuck from proxxon too for hss and other tools. All the
> > > pcb's i
> > > hand drilled had the etched hole, never went through this.
> > >
> > >
> >
> >
> >
> > ------------------------------------
> >
> > Be sure to visit the group home and check for new Links, Files, and
> > Photos:
> > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> >
> >
> >
>
>
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