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Subject: Re: [Homebrew_PCBs] RE : Cutting FR4

From: "Stefan Trethan" <stefan_trethan@...>
Date: 2006-05-01

On Mon, 01 May 2006 03:21:34 +0200, William Kroyer
<william.kroyer@...> wrote:

> I've tried using a 7" cutting wheel on my circular saw. After about
>
> 24" they tear free from the
>
> center mount. I went through 3 of them this morning and made 1.5 cuts.
>
> The last time I cut up
>
> a sheet I used a regular router bit. Needless to say the bit was dead
>
> by the time I was done. I
>
> also tried a 1/8" mill end I had gotten from somewhere locked in my
>
> router. It did a really nice
>
> job for about 12" then snapped. I'm thinking a beefier mill end would
> work.


Any router that isn't carbide will dull real quick.
If you use a carbide one you would probably need automated movement to
prevent it breaking, or one that is very large and wasteful.

A shear will not dull noticeably even after many cuts. I can still cut
paper with the hand shear i used for years. Not with the lever shear, but
that never did cut paper.

ST