Archive of the former Yahoo!Groups mailing list: MOTM
Subject: Re: [motm] Re: My initial take on the panel discussion
From: Paul Haneberg <phaneber@...>
Date: 2005-12-04
You cannot stamp out an I or H shape. It's not physically possible. You
must either mold it or extrude it.
It is possible to stamp out a U shape, but you'd have to be really thin to
fit two of them between two modules.
I doubt you could make the piece thin enough to fit and still stiff enough
so that you wouldn't catch your finger on the exposed edge and bend it, not
to mention hurting yourself.
My company does 90% of our own diemaking in house. I would guess the cost
to make such a die would be $15,000+
I don't think you could make this part on a CNC punch press either. On a
CNC punch press you would have to do the bending as a secondary operation.
The material is thin and the bends are only 1/8" apart. I just don't think
you could do it.
I have no doubt it could be stamped on a conventional press with a custom
made die. You would have to use what is called a progressive die, which has
multiple stations. The first station would cut out almost all the material
including the holes which would be on the backside of the module when
applied. The second station would bend the part into a U shape. The third
station would finish the cut.
If anyone out there is a machinist or die maker and wants to tell me I'm
wrong, I'm willing to listen. I'm not a machinist myself, but I do have a
couple of them in my employ.
Paul H.
----- Original Message -----
From: "djbrow54" <
davebr@...>
To: <motm@yahoogroups.com>
Sent: Saturday, December 03, 2005 11:29 PM
Subject: [motm] Re: My initial take on the panel discussion
>I don't want to see my panel edges ... but if I did, I would think
> that a stamped piece of thin metal or aluminum would do the trick. It
> would be in the shape of an I with two holes at the top and two holes
> at the bottom. You put the panel in, lay the strip at the edge, and
> then put the screws through to sandwich the panel between the edge
> strip. The top and bottom could have curves to match the screw heads
> so all you would see was the vertical strip and the piece between the
> two screw heads. Simple and easy to do.
>
> Dave
>
> --- In motm@yahoogroups.com, Geoff <overand@o...> wrote:
>>
>> I'm not thinking of a custom manufactured plastic part. I'm
> thinking of
>> a custom silkscreen piece of plastic
>> etched off of a large roll of plastic of the same thickness. It's
> not
>> an injection-mold thing I'm talking about,
>> I'm talking about laser-etching or otherwise cutting, on a computer
>> controlled system, a large thick set of
>> these things that would be cut from a continuous sheet of plastic,
> as i
>> described, at the same thickness
>> of 35mm film, or so. I'll try to research it further.
>>
>> -Geoff
>
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