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Terry Coombs Terry Coombs is offline
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Default Help: How to Make a Gang Saw

Searcher7 wrote:
On Feb 7, 2:49 pm, whit3rd wrote:
On Feb 6, 11:24 pm, Searcher7 wrote:

I need to cut soft metals into strips and also groove wood and
plastics
As for the metal strips, I'd like to get close to the .156" width of
some PCB traces


Two ways to get metal strips this thickness, a shear (just a
flat plate and a guillotine blade), with limited length of
strip (I've seen 5 foot wide throats, though). Or, a rotary
device (not sure what the name is), consisting of a top roller
with small/large/small...diameters opposed to
a bottom roller with large/small/large... diameters, both rollers
geared to rotate together.


You lost me. This is about width, not thickness. I need to get
accurate and consistent results, which cannot be done with the tools
you are referring to. Upon visual inspection, each strip must be the
same width. With your way there is no way to be accurate throughout
the length of the cut, or from one strip to the next. And your strips
would also be deformed at the edges along their length.

As for slotting metal and plastic, you will need controlled-diameter
saw blades of known widths: horizontal mill saw blades of
this type are available from machinery suppliers, and that, rather
than woodwork-type saw blades, will be your best source
of standardized parts to build your production machine.


I'm not attempting to slot metal. Just wood and possibly plastic.

Thanks.

Darren Harris
Staten Island, New York.


Actually , what he described is known in the cabinet trades as a slitter .
We use 'em to cut plastic laminates , but no reason they couldn't be used
for metal too . With tight control over the thickness of the discs , no
reason you couldn't get what you're after with ZERO WASTE . Like a rotary
scissor ... as far as the slotting operation , I have no ideas ... perhaps a
router ?
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