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Beverley vs guillotine shear


#1

Hello Every body

I plan for new collection to cut silver sheet in to stripes. silver
sheet dimensions are length is 40 cm, thickness is 5mm and width 8
cm.

what is the best beverley or guillotine sheare

thks again
best
regards
nathalie


#2

You dont say what the strip sizes are.

Id be very surprised if youve access to the tools to do this kind of
metal processing.

The best way is to go to a sheet metal workshop and get them to cut
it on their brake guillotine. they usually handle sheet metal up to
10ft long. but willcut down to 1/16th in thick. Usually a cnc
programmed machine.

Thats what I do when I need very big stuff cut accurately.


#3

Hi Nathalie,

Errr. which Beverly? (there are currently 3 different sizes, with
vastly different cutting capacities.) Equally, what type of
guillotine? A big floor model, or a cheapo tabletop?

I own both a 12" guillotine, as well as a mid-sized Beverly shear.
(B2 model)

The catch for you is going to be the 5mm thickness. That’s nearly
1/4". The big Beverly (the B3) will probably chop through that, but
it’ll curl it over as it goes. You can get a strip if you uncurl it,
but it won’t come out like a slice of paper.

Speaking generically, the advantage to the Beverly shears are two
(A) they’re throatless. Which means you can cut as deep as you like
into a sheet of metal without bottoming out against the throat. This
was handy for me back when I was doing armor. Sometimes the sheets
of steel I was cutting were 8 feet long.

(B) you can cut curves, sometimes surprisingly tight ones, with a
Beverly, even several feet into a sheet of metal. The bigger the
Beverly, the bigger the minimum radius. (They used to make a 'mini’
shear called the B-0, which was just about perfectly scaled for
jewelry work. Unfortunately, they don’t make it any more, and the
existing B-0’s are rare indeed…)

For just cutting straight strips, the Beverly isn’t what you want,
but it’s much more versatile than most shears.

Now on to guillotines: If you’re really trying to chop through 5mm
sterling sheet, I don’t know of any manual guillotine shear that’s
going to do it for you. You’d be looking at a hydraulic shear, and
large sums of money. Probably best to send that out to someone who
has such a shear. (Probably whoever’s rolling the 5mm sheet for
you.)

So. did you actually mean 0.5mme That seems a bit more plausible.

In that case, if all you want is 8CM strips, a straight guillotine
shear is the right answer to that question. The Beverly specializes
in curves. If that’s not what you’re doing, it’s not what you need.

For whatever that was worth.

Regards,
Brian


#4

Hmm, those are some hefty dimensions in sterling silver. You said:

I plan for new collection to cut silver sheet in to stripes. silver
sheet dimensions are length is 40 cm, thickness is 5mm and width 8
cm. 

I calculate that such a piece of sterling silver would weigh in at
about 1.648 kilograms! Wow !

In any case the key dimensions in selecting an appropriate shear is
the thickness of the material to be cut. For each shear you consider
buying check the maximum thickness that it’s rated for use, usually
expressed as thickness of mild steel in gauge or millimeters. For
most shears do not exceed that thickness when cutting softer material
(at least this was the rule I was taught to use to preserve my
equipment). Also be aware that the blade clearances for shears
capable of cutting thick stock and thin stock are different. Thin
stock (say 22 ga) cut on a shear capable of cutting 5mm thick sheet
would have a lip left on it rather than a clean cut.

I really wonder if the above dimensions you’ve posted are accurate.
If they are then you’ll be purchasing an incredible amount of
sterling silver sheet in an unusual thickness and should contact
your silver vendor about having custom bar stock made for you.
They’ll be really happy if you’re going to buy that much silver sheet
from them!

smiles
Michael Edwards


#5

If I’m reading it right you have 5mm x 8cm stock- pretty thick stock,
but what size strips/stripes are you seeking?.. at any rate Beverly
shears are different sizes and more appropriate for cutting patterms,
curves, scrolls, etc. If you are going to chop 40 cm x 5 mm (about a
16 inch x 3.5"x 5mm piece of stock) into strips. a really good
guillotine would be the best way to go- but we’re talking pricey
equipment. Maybe finding a metals shop in your area that has a
cutting brake would be the way to go.

That’s really long thick, expensive (for silver) material. rer