On Fri, 19 Oct 2007 19:13:55 -0000, you wrote:
>I am going to get started on a new project that requires very small
>PCB's. As the subject states - what's the best method of cutting PCB's
>to the size listed here - (3" x .1"). These will be used in a non-
>electronic project.
Those are quite small.
>
>I will be using single sided PCB's at .062" thick.
>
>I am thinking of using one of those large office paper cutters (the
>ones that look like they have a 3 foot lawn mower blade as a cutter!)
>as the board will be less than 2mm thick.
>
My experience is that the cut can wander, which does not help you a
bit.
>I understand that PCB's can dull blades quickly, but this cutter is one
>that has been deemed obsolete.
>
>Any thoughts? I read the posts about using scroll saws, routers, etc.
>I was thinking that as my boards would be very thin, my method would
>work. The only catch would be that I would need very straight cuts, no
>wandering edges.
I have a mill and various pieces of machining equipment, along with a
metal shear that I've adjusted for PC board material.
The shear does best, but the material tends to shift while cutting,
which ends up with a curved edge.
I have had some success with notching a PC board with a carbide
rasp/router bit (made for PCBOARD use) in a vertical mill. Not sure
what you might to otherwise.
If you have the capability or desire, consider some of the extremely
small carbide bladed table saws (talking a blade 2 to 3 inches in
diameter) and that might do the trick.
A pc board shear will work, but the work needs ∗not∗ to shift during
cutting.
Harvey
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