Find a sheetmetal shop they usually have a jump shear that can cut 1/4 inch thick aluminum..A metal shear blade has a different cutting angle
that is more obtuse than a paper shear.Cutting copper clad on a paper shear can nick the blade and the paper or books that they produce will no
longer have a clean edge and make the book binder a very unhappy person..
I used to have a access to a jump shear at work untill they dismantled our machine shop..My uncle had a paper shear and the blade on that was like a sharp knife..a sheet metal shop is your best bet and they will probable let you use it for free.(just watch your fingers when you use it!).They may even have a small version you can cut them on..
--- On Thu, 9/9/10, rrrydman@... <rrrydman@...> wrote:
> From: rrrydman@... <rrrydman@...>
> Subject: Re: [Homebrew_PCBs] Re: Diamond saw
> To: Homebrew_PCBs@yahoogroups.com
> Date: Thursday, September 9, 2010, 1:22 PM
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> Commercial paper shears are an entirely different animal.
> These typically are large machines for commercial book
> binding. The have multi ton presses to shear volumes of
> posters, book pages, and catalogues. The will have no
> difficulty shear the binding off a book. They will leave a
> clean edge. They are quickly set up by clamping the book or
> stack of paper to the cutting bed, then a large razor sharp
> blade is brought down with tremendous force using a
> hydraulic pressure or a mechanical leverage system. I have
> used these to cut stacks of boxes at a previous employment.
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> I would not expect a print house, publishing firm , to
> charge more than a few dollars to do this, although
> scheduling might take a day or two. Maybe not just go in and
> do it on the spot, but leave for a day or two. Ask around at
> commercial print houses.
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> -----Original Message-----
>
> From: Slavko Kocjancic <eslavko@...>
>
> To: Homebrew_PCBs@yahoogroups.com
>
> Sent: Thu, Sep 9, 2010 12:53 am
>
> Subject: Re: [Homebrew_PCBs] Re: Diamond saw
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> Na 9.9.2010 9:26, rrrydman@...
> je pisal:
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> > I would try going to a local printer who might have
> a paper shear. I think they could get excelent results for
> only a few dollars, and the results might allow them to be
> fed with your paper feed.
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> > These shears are quickly set up by compressing the
> paper stack in a clamping mechanism and then shearing them
> with a razor sharp cutting blade.
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> > Good luck!
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> Paper shear works very nice for few cuts. FR4 laminate is
> glass epoxy
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> and that stuff make cutting blade dull very quick.
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