## AW: Re: [PPLetterpress] vandercook

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• I think that he means heavy Bristol, it comes in 230 Lb. basis weight. The basis weight is a term used to describe the weight in pounds of 500 sheets of paper
Message 1 of 17 , Mar 3, 2012
I think that he means heavy Bristol, it comes in 230
Lb. basis weight.

The basis weight is a term used to describe the weight
in pounds of 500 sheets of paper (one ream) of a particular
measured size of sheet. Since the sheet size varies
from one type of stock to another, the basis weights
are not always easily comparable.

For example, an office supply store has 8.5 x 11 size
cover stock (80 lb Printing Bristol) and 8.5 x 11 size
card stock (90 lb Index) side by side on the shelf. Both
papers are manufactured by the same company, and
a basis weight comparison indicates the card stock
(90 lb Index) is heavier than the cover stock(80 lb
Printing Bristol). In this example, the cover stock (80
lb Printing Bristol) is actually heavier than the card
stock (90 lb Index).

The reason the cover stock is heavier is because before
the two types of paper were cut into 8.5 x 11 size pages,
the card stock was a larger sheet size than the sheet size
of the cover stock. When the papers were cut during the
manufacturing process into 8.5 x 11 size pages, more reams
(500 sheets) of paper were received from the card stock sheets
than from the cover stock sheets. This makes the weight
of the cover stock heavier than the weight of the card
stock.

It is easier to compare the cover stock metric weight
(g/m2) against card stock metric weight (g/m2). If
you look at the metric weights of the two stocks in
the previous example, it is immediately evident
that 80 lb Bristol cover stock (176 g/m2) isheavier
than 90 lb Index card stock (163 g/m2).

The sheet size used to determine the basis weight of
Printing Bristol is 22.5x35" , and the sheet size for
the basis weight of Index Bristol is 25.5x30.5". Interestingly
enough both numbers result in the same number
for a basis weight. The sheet size to determine the basis
weight of Cover stock is 20x26".

MaiKätzchen

Dum loquimur, fugerit invida Aetas:
Carpe diem!
quam minimum credula postero!

Horace
Odes Book I

From: "nohogallery@..." <nohogallery@...>
To: PPLetterpress@yahoogroups.com
Sent: Sat, March 3, 2012 7:15:10 AM
Subject: Re: [PPLetterpress] vandercook

What do you really mean by 230# paper?    How many grams/sq.meter?  How big of a sheet?  We have printed 20 x26 600grm lettra on our SP20 and SP25 with reduced packing.  A small sheet would be difficult.  Good luck.

-----Original Message-----
From: griinga <laurensted@...>
To: PPLetterpress <PPLetterpress@yahoogroups.com>
Sent: Sat, Mar 3, 2012 1:27 am
Subject: [PPLetterpress] vandercook

I'm wondering if any printers out there have successfully used 230# paper on their Vandercook and how, seeing as you can't use the grippers and cylinder. I've been strictly a platen press printer and now need to get going on my Vandy 15.
Thanks for any input.

• us Europeans have it easy: gsm means grams per square meter. A0 is one square meter. divide that & you get A1, then A2, etc. A4 (210x297mm) is 1/16 of A0, thus
Message 2 of 17 , Mar 3, 2012
us Europeans have it easy: gsm means grams per square meter. A0 is one square meter. divide that & you get A1, then A2, etc. A4 (210x297mm) is 1/16 of A0, thus one sheet A4 @ 160gsm would be 10grams. good for working out postage.
e

Sent from the ePhone

On Mar 3, 2012, at 10:20, Silber MaiKätzchen <maykitten1@...> wrote:

I think that he means heavy Bristol, it comes in 230
Lb. basis weight.

The basis weight is a term used to describe the weight
in pounds of 500 sheets of paper (one ream) of a particular
measured size of sheet. Since the sheet size varies
from one type of stock to another, the basis weights
are not always easily comparable.

For example, an office supply store has 8.5 x 11 size
cover stock (80 lb Printing Bristol) and 8.5 x 11 size
card stock (90 lb Index) side by side on the shelf. Both
papers are manufactured by the same company, and
a basis weight comparison indicates the card stock
(90 lb Index) is heavier than the cover stock(80 lb
Printing Bristol). In this example, the cover stock (80
lb Printing Bristol) is actually heavier than the card
stock (90 lb Index).

The reason the cover stock is heavier is because before
the two types of paper were cut into 8.5 x 11 size pages,
the card stock was a larger sheet size than the sheet size
of the cover stock. When the papers were cut during the
manufacturing process into 8.5 x 11 size pages, more reams
(500 sheets) of paper were received from the card stock sheets
than from the cover stock sheets. This makes the weight
of the cover stock heavier than the weight of the card
stock.

It is easier to compare the cover stock metric weight
(g/m2) against card stock metric weight (g/m2). If
you look at the metric weights of the two stocks in
the previous example, it is immediately evident
that 80 lb Bristol cover stock (176 g/m2) isheavier
than 90 lb Index card stock (163 g/m2).

The sheet size used to determine the basis weight of
Printing Bristol is 22.5x35" , and the sheet size for
the basis weight of Index Bristol is 25.5x30.5". Interestingly
enough both numbers result in the same number
for a basis weight. The sheet size to determine the basis
weight of Cover stock is 20x26".

MaiKätzchen

Dum loquimur, fugerit invida Aetas:
Carpe diem!
quam minimum credula postero!

Horace
Odes Book I

From: "nohogallery@..." <nohogallery@...>
To: PPLetterpress@yahoogroups.com
Sent: Sat, March 3, 2012 7:15:10 AM
Subject: Re: [PPLetterpress] vandercook

What do you really mean by 230# paper?    How many grams/sq.meter?  How big of a sheet?  We have printed 20 x26 600grm lettra on our SP20 and SP25 with reduced packing.  A small sheet would be difficult.  Good luck.

-----Original Message-----
From: griinga <laurensted@...>
To: PPLetterpress <PPLetterpress@yahoogroups.com>
Sent: Sat, Mar 3, 2012 1:27 am
Subject: [PPLetterpress] vandercook

I'm wondering if any printers out there have successfully used 230# paper on their Vandercook and how, seeing as you can't use the grippers and cylinder. I've been strictly a platen press printer and now need to get going on my Vandy 15.
Thanks for any input.

• Yehuda, Thank you for your reply. Enjoyed perusing your website. Beautiful baby. Exquisite books. Lauren Stedman ________________________________ From:
Message 3 of 17 , Mar 3, 2012
Yehuda,
Lauren Stedman

From: "fritzmiklaf@..." <fritzmiklaf@...>
To: PPLetterpress@yahoogroups.com
Sent: Saturday, March 3, 2012 11:35 AM
Subject: [PPLetterpress] Re: vandercook

I don’t see why you can’t print 230 gm paper on an SP-15. I have printed some pretty heavy stuff and my friend Ariel even more so. If the cylinder and grippers can’t take it, you could always lay the paper down carefully and run the cylinder over it, kind of like an etching press.

Yehuda Miklaf
Jerusalem

• Something that will come into play with thicker stocks is the size of your press, specifically the cylinder. Larger Vandercooks like the SP20, SP25, or 219
Message 4 of 17 , Mar 4, 2012
Something that will come into play with thicker stocks is the size of your press, specifically the cylinder. Larger Vandercooks like the SP20, SP25, or 219 have larger cylinders than an SP15 or #4, which means the stock does not have to flex as much to wrap around the cylinder.

I have printed coaster stock and 600gsm lettra on my SP20 without difficulty, taking the precautions suggested by others in this thread (grain parellel to the cylinder, larger sheets to avoid slap). If I recall, I printed the coaster stock with just the tympan topsheet and no additional packing.

Good luck!
-----

Mike Dacey

Repeat Press
Custom Letterpress Printing

9 Olive Square
Somerville, MA 02143
617.299.0918

www.repeatpress.com
@repeatpress

On Sat, Mar 3, 2012 at 1:54 PM, lauren Stedman wrote:

Yehuda,
Lauren Stedman

From: "fritzmiklaf@..." <fritzmiklaf@...>
To: PPLetterpress@yahoogroups.com
Sent: Saturday, March 3, 2012 11:35 AM
Subject: [PPLetterpress] Re: vandercook

I don’t see why you can’t print 230 gm paper on an SP-15. I have printed some pretty heavy stuff and my friend Ariel even more so. If the cylinder and grippers can’t take it, you could always lay the paper down carefully and run the cylinder over it, kind of like an etching press.

Yehuda Miklaf
Jerusalem

• By the way, (sorry if it s already been addressed!) Rives BFK 230 is 230gsm, Grams/Sq Meter, not 230# LB. It s probably about 15 point caliper (.015 ) thick
Message 5 of 17 , Mar 5, 2012

Rives BFK 230 is 230gsm,  Grams/Sq Meter, not 230# LB.
It's probably about 15 point caliper (.015") thick

Crane Lettra double-thick is 220# and 600gsm and 40 point caliper (thickness approx .040")

Reich Savoy double-thick is 236#, about 630gsm

Rising 2-ply museum board is .060" - 60 point.
That's as heavy as I can run on the Windmill ;-)
Don't recommend trying this on a cylinder press.

Cheers!

P

On 3 Mar 2012, at 9:36 AM, victoria kniering wrote:

Yes, use it all the time, rives bfk 230.  I make books, I actually use it to print woodcuts, monotypes and letterpress.
you can adjust the gripper height,  and you can change the packing, or... you can use a few sheets of newsprint loose behind the paper as removable packing to get your paper to print.... or.... you can put a piece (or two or three) of sheet aluminum litho plate under a wood block that's not quite type high, if you don't want to mess with the packing...  do you know if your vandy is a galley press or not.  if so you need to have the bed at type high first and if the press doesn't have the steel plate that takes up the height of the galley you can order one... the vandy is a proof press, some of the book houses used to proof each galley of type before they put it all together i.e. the galley press bed height is set for the addition of type AND galley...so when printing type alone you need the steel plate to bring the whole pkg. to type high. na graphics sells the steel plate for that.  if you don't know if it's a galley press or not you can tell you from the serial number, at least n. a. graphics can look it up for you.
what you don't want to do is add to much packing or plates to make it way to hard to roll the roller, if it feels like it's binding stop and remove packing don't jeopardize the settings ...it's not a platen press and PRESSURE is very very light.
if you really want  something more the a "kiss" impression, use the platen press..

victoria jutras kniering
On Feb 28, 2012, at 9:57 AM, griinga wrote:

I'm wondering if any printers out there have successfully used 230# paper on their Vandercook and how, seeing as you can't use the grippers and cylinder. I've been strictly a platen press printer and now need to get going on my Vandy 15.
Thanks for any input.

• Victoria, I feel like I would need to look at your setup to understand the trouble you ve been having. I thought maybe I d catch on from the posts, but I m
Message 6 of 17 , Mar 6, 2012
Victoria,

I feel like I would need to look at your setup to understand the trouble you've been having. I thought maybe I'd catch on from the posts, but I'm still unsure why you have trouble feeding.

We've routinely used 300 lb Waterford, 250 lb Bockingford, and Lettra Duplex which is essentially 220#, all on the Vandercook. I don't know of anything special you would need to do to feed it, unless, as someone brought up, your paper is small and it tries to stick straight up. Even then, it should still work ok, except you'll need to trim of the end of the paper to clean up the bit of ink it picks up when the end of the paper slaps the plate as it rolls past due to its stiffness.

One thing I can offer based on my experience with my own press is that there was a time when I was dealing with a bearing that was worn down on the opposite side from the press operator. Because of this, the grippers were not rising to their full height. I had to build up the track a little - maybe it was with some thin steel rule left over from plate material? Something. I rigged it. Also, there was a spring behind the ramp that had broken. I tucked a piece of furniture behind the ramp (it seemed just the right size) to offer better resistance. Then the grippers worked fine. My sense was that they were designed to rise higher in the first place, but due to wear, and the spring breaking, were not rising very much anymore at all. Mine is a very early model 4 - about 75 years old now I believe.

I don't know if that helps. If you think that may be your problem, here's what I would suggest based on our press's layout: Have someone slowly wheel the carriage out and back for you as you carefully watch how the mechanics work on the opposite side. Carefully manipulate the parts and movements as needed to understand their functions. When you understand the mechanics of the gripper system (it's a lever with a bearing on the bottom that travels up an inclined plane) you may be able to see what the problem is and why the grippers aren't raising sufficiently. On mine, I'm able to manipulate the lever with my hands and raise the grippers manually which is how I figured out how to get around the problem.

(It would sure be nice to restore it some time so that the bearings, ramp and spring are the correct specifications again! I hope I didn't just make everyone groan in frustration at the knowledge of my little rigging effort. )

Good luck!
Kim Vanderheiden
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