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On 2/22/2016 2:55:43 PM, Jean-Paul Louis louijp@... [Homebrew_PCBs] <homebrew_pcbs@yahoogroups.com> wrote:
Camillus,
Using punch and die to make holes in a PCB is a very bad idea. I was using that method a previous job to cut and punch holes in PCBs for automotive use, and we got rid of it very fast. punch and dies are wearing so fast that we needed to resharpen them every week. The glass content of a PCB is very high and very abrasive to any kind of tool. We switched to a router with nitride coated bit and got rid of our problems.
Just my $0.02,
Jean-Paul
N1JPL
> On Feb 22, 2016, at 3:35 PM, camillus_blockx@... [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:
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> Hi all pcb drillers,
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> I had the idea for a long time to use punch and die for making holes in pcb's.
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> Any people here can make or know someone who can make punch and die set.
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> I had the following sizes in mind 1 mm, 0.8, 0.6, 0.4, 0.2 mm ( 1 inch = 25.4 mm ).
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> The base can have the 4 holes and service as the die. The punches need to be made separately.
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> Thinking of a metal( steel ) bus in which a punch can slide and a spring to push the punch back after making a hole. The punches need of course to be turned at the right sizes, and tempered to hardness ( idem for the base.
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> I think a hand press can be made easily from aluminum or plywood. To make a hole from max 1 mm I do not think you need tons of pressure.
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> I bring this up to see what others think of this. I'm having my nephew making up some autocad drawings, which I will post if ready. I can give a hand draw concept later ( have to draw it first ...LOL )
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> These punches goes a long way I guess, knowing that we used sort like to make a square of 100 holes at once in a 4 mm aluminum compound metal, and the punches last for 1000's of punches ( this was with a 30 TON press by the way ).
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> Any thoughts as if this is feasible?
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> cb
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