Keith,
That make sense as 150 degrees is about the glass transition temperature of regular FR4.
That was most likely to make clean cuts versus zillions of tiny glass shards when shearing.
Just my $0.02,
Jean-Paul
N1JPL
> On Jan 22, 2016, at 9:25 PM, 'keith printy' keethpr@... [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:
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> Where I used to work they used a metal shear like you cut a sheet of steel with by stepping on a pedal. They used to put the boards in an oven first maybe 150 degrees I don’t remember but it made them cut better without breaking
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> From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
> Sent: Friday, January 22, 2016 8:57 PM
> To: Homebrew_PCBs@yahoogroups.com
> Subject: [Homebrew_PCBs] Re: Guillotine cutter
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> I use a brake I purchased at Harbor Freight for about $30. Just score the copper and snap. Safer than a guillotine and many times safer than a table saw.
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