Thanks for the tips. I went for the analog haven cable to be sure..
On Wed, Oct 22, 2008 at 11:36 PM, Guy Drieghe D. <guy@guyd2.com> wrote:
>
> Thanks for the extensive explanation, James.
> Always nice to learn something, especially when it's fringe-related to
> one's interests.
>
> I saw a couple of NG series on telly about "how things are made", and
> I was mighty impressed with all these heavy machinery punchers and
> presses and plasma cutters... quite fascinating. Sometimes scary too,
> a bit.
>
> Also a stunner to watch (on Apple's website): how a solid block of
> aluminum is machined into something as refined as the latest MacBooks.
>
> -g
>
>
> On 22 Oct 2008, at 23:02, James Husted wrote:
>
> > In most sheet metal work, the holes are not drilled and the metal is
> > not sawed. The holes are typically punched out of the sheet metal
> > (usually a 4 foot x 8 foot sheet) by a large multi-headed numerically
> > controlled punching machine. The operator programs in all the hole
> > locations and the type of tool used (round, square, oblong, hex, or
> > special like a RS-232 connector) and its orientation if needed. The
> > sheets are programmed to be punched with the highest yield of parts
> > possible. That is why custom parts are expensive. You have to have a
> > large part count to make it worth punching. Typically the metal shop
> > will try to mix jobs from different clients using the same gauge
> > metal to lower cost otherwise extra metal left over is recycled at a
> > loss. The edges are punched with a series of long slot punches. You
> > can see marks along the edge of a panel where the punches overlap
> > unless a post-process sanding cleanup is done. Also typically the
> > front face is called out and the job is specified weather the holes
> > are to be punched from the front or rear surface. If you look closely
> > at the edges of the holes you can see this as a very sharp edge on
> > the exiting side and a small rounded edge on the side where the punch
> > hits the metal. This get more obvious as the punch wears out and
> > doesn't punch as cleanly.
> > The type of holes that one can have punched are totally limited by
> > the sheet metal house. It is limited by what punches they have in
> > stock. Most houses will have a huge variety of round and square hole
> > sizes and allot of the common slot sizes (used by rack ear holes for
> > instance) along with commonly used custom holes like for IEC power
> > connectors and computer serial connectors. Most odd shapes can be
> > made by punching combinations of smaller holes too. If a client needs
> > an odd shape hole that will be used a lot in a job, a custom punch
> > will often be made to add to the sheet metal house's library.
> > Doepfer's metal shop may not have the small slot punches mentioned
> > and they may want way too much to make a custom punch.
> >
> > I hope that helps. I can tell you from experience that seeing a large
> > sheet metal machine pound out a piece is very impressive. Here is a
> > link to a site that shows the whole process: <http://www.industrial-
> > computer-source.com/white_paper_sheet_metal.html>
> >
> > James
> >
> > On Oct 22, 2008, at 12:04 PM, Guy Drieghe D. wrote:
> >
> > >
> > > James,
> > >
> > > Can you please enlighten the non-metal workers (and non-native
> > English
> > > speaking) amongst us as to what exactly "hole punch" and "slot
> > punch"
> > > thingies are ?
> > >
> > > tia !
> > >
> > > - Guy
> > >
> > >
> > > On 22 Oct 2008, at 20:41, James Husted wrote:
> > >
> > >> Dieter-
> > >> And thanks for making them! I know they are probably not a hugely
> > >> selling product either. I have already hacked my AS stuff (and
> > >> reducing it's resale prices accordingly). Unfortunately for me at
> > the
> > >> time I would not be willing to let go of 3-hp of panel space (one
> > in
> > >> each side of a bank of AS). Things are different now. As a old
> > metal
> > >> work guy I really see changing the hole punch currently used by
> > >> everyone to a slot punch instead as a much better solution (Cwejman
> > >> seems to be the only one doing this). That way any module can be
> > used
> > >> in any system. Changing punches should cost nothing more than a
> > >> programming fee for older modules already in production and nothing
> > >> for newer modules.
> > >>
> > >> -James
> > >>
> > >> On Oct 22, 2008, at 11:06 AM, yahoo@doepfer.de <yahoo%40doepfer.de>wrote:
> > >>
> > >>>> The only other concern is the 1/2 a hp hole spacing difference
> > from
> > >>>> Doepfer and AS modules. Expect a gap or break out the drill
> > press!
> > >>>>
> > >>>> -James
> > >>>
> > >>> As mentioned several times we have 1.5 HP blind panels available
> > to
> > >>> avoid
> > >>> these gaps !
> > >>>
> > >>> Best wishes
> > >>> Dieter Doepfer
> > >
> > >
> > > [Non-text portions of this message have been removed]
> > >
> > >
> > > ------------------------------------
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> >
> >
>
> [Non-text portions of this message have been removed]
>
>
>
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