Digital BW, The Print

Mark,

You wrote:

>I went to the Janitor Store this morning and got a beta version of
>the Mayer Rod. It's basically a big-ass 24" wide window
>squeegee. ...

I like the concept.

> ... "Mayer Rod" ... I'm curious to see what it looks like.

See: http://www.buschmancorp.com/faq.asp  for a good diagram.

>... I've gotten to the point that I don't really care about
>Wilhelm,... I print with Museo, ... I know it will last
>"a long time"; whatever that means. ...

>... I'll tell a buyer all this. ...
>You can drive yourself nuts with all this anxiety. ...

Definitely, keep printing and don't go crazy with this stuff.

I pursue longevity issues, in part, because of the enjoyment I get out of
the learning in and of itself.  In the meantime, I continue to print on EAM
because I like the looks of it for my type of photos.  So far, everyone is
very happy with the results.  I'm not charging (or selling) so much that I
feel I have to make a print that will last 500 years.  Collectors are not
flocking to my door.  For my museum work I'll use cotton paper for archiving
and EAM for display.  They can have two copies with all the disclosures
about the limitations of the technology.

Paul
http://www.PaulRoark.com

--- In DigitalBlackandWhiteThePrint@y..., "Paul Roark" <paul.roark@v...> wrote:
> > ... "Mayer Rod" ... I'm curious to see what it looks like.
> 
> See: http://www.buschmancorp.com/faq.asp  for a good diagram.


Surely, the Mayer rod is not what this says it is:

"What is a wire-wound metering rod?
A wire-wound metering rod, often called a mayer rod after it's inventor, Charles 
Mayer, is a stainless steel rod around which stainless steel wire is tightly 
wrapped. The wound wire creates a thread that is always the same profile (a half 
circle). Wire size is determined by the diameter of wire wrapped around the rod. 
These rods are usually chrome plated to extend working life. Wire-wound rods 
are used on coating machines to apply pigments and other coatings onto various 
web surfaces."

I pictured the Mayer Rod as more like what they call a Smoothing Rod, which is 
the next one down on that page. Seems like their Mayer rod would leave the 
groove marks on the print.

MT

That's exactly what it is...in fact it is the devise that is used to make
most of our inkjet coated papers.  Rod coating is one of the most common
techniques (along with the air knife) for production coating.  The key with
a Mayer rod is to select the correct one for the viscosity and desired film
thickness of the final coating...that's what I've done...its a lot of
work...but the final results are worth it.

Robert

On 9/23/02 10:00 AM, "Mark Tucker" <mtucker508@...> wrote:

> --- In DigitalBlackandWhiteThePrint@y..., "Paul Roark" <paul.roark@v...>
> wrote:
>>> ... "Mayer Rod" ... I'm curious to see what it looks like.
>> 
>> See: http://www.buschmancorp.com/faq.asp  for a good diagram.
> 
> 
> Surely, the Mayer rod is not what this says it is:
> 
> "What is a wire-wound metering rod?
> A wire-wound metering rod, often called a mayer rod after it's inventor,
> Charles 
> Mayer, is a stainless steel rod around which stainless steel wire is tightly
> wrapped. The wound wire creates a thread that is always the same profile (a
> half 
> circle). Wire size is determined by the diameter of wire wrapped around the
> rod. 
> These rods are usually chrome plated to extend working life. Wire-wound rods
> are used on coating machines to apply pigments and other coatings onto various
> web surfaces."
> 
> I pictured the Mayer Rod as more like what they call a Smoothing Rod, which is
> the next one down on that page. Seems like their Mayer rod would leave the
> groove marks on the print.
> 
> MT
> 
> 
> 
> 
> Please visit the Group Homepage to check the Files, Bookmarks, Polls and other
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I would expect a smooth rod to cause all kinds of problems such as 
areas with almost no coverage and a large pool of material being forced 
ahead of the rod. The grooves are actually good practice. The main 
issue is the leveling properties of the coating material. The Mayer rod 
would push excess material ahead of it; however, the groves allow 
sufficient material to get under the rod. During setting and drying, 
the material should flow together into a smooth, uniformly thick layer. 
This is the technique used when plywood panels are coated with epoxy to 
waterproof and stabilize the top ply. In fact "WEST" (a epoxy system 
used in wooden boat building) sells spreaders with notches cut in the 
edge just for this purpose.

Jim
San Diego CA

On Monday, September 23, 2002, at 10:00 AM, Mark Tucker wrote:

> --- In DigitalBlackandWhiteThePrint@y..., "Paul Roark" 
> <paul.roark@v...> wrote:
> > > ... "Mayer Rod" ... I'm curious to see what it looks like.
> >
> > See: http://www.buschmancorp.com/faq.asp  for a good diagram.
>
>
> Surely, the Mayer rod is not what this says it is:
>
> "What is a wire-wound metering rod?
> A wire-wound metering rod, often called a mayer rod after it's 
> inventor, Charles
> Mayer, is a stainless steel rod around which stainless steel wire is 
> tightly
> wrapped. The wound wire creates a thread that is always the same 
> profile (a half
> circle). Wire size is determined by the diameter of wire wrapped 
> around the rod.
> These rods are usually chrome plated to extend working life. 
> Wire-wound rods
> are used on coating machines to apply pigments and other coatings onto 
> various
> web surfaces."
>
> I pictured the Mayer Rod as more like what they call a Smoothing Rod, 
> which is
> the next one down on that page. Seems like their Mayer rod would leave 
> the
> groove marks on the print.
>
> MT
>
>
>
<image.tiff>
>
>
> Please visit the Group Homepage to check the Files, Bookmarks, Polls 
> and other resources as they are often being updated. The page is at:
>
> http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint
>
> If you wish to receive no emails or just a daily digest, or you wish 
> to unsubscribe, please edit your Membership preferences by visiting 
> this same page.
>
> Please follow these basic guidelines:
> - Include your full name with your message.
> - Include the address of your website, if you have one.
> - As threads develop, trim off excess portions of earlier messages to 
> keep them short.
> - As the topic of a thread changes remember to change the subject 
> header.
> - Good manners are required at all time. No personal attacks or 
> &amp;amp;quot;flames.&amp;amp;quot;
> - Complete your Yahoo profile.
> - Before posting a question, search the message archives and the 
> various resources on the homepage.
>
>
>
>
> Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.

[Non-text portions of this message have been removed]

--- In DigitalBlackandWhiteThePrint@y..., James Downs <silvergull@m...> wrote:
The main 
> issue is the leveling properties of the coating material. The Mayer rod 
> would push excess material ahead of it; however, the groves allow 
> sufficient material to get under the rod.


I understand now the approach. I understand now about the grooves in the Mayer 
rod. Then, why not something like one of those grooved trowels at Home Depot, 
that are used to apply the glue for commercial tile? The talking end looks 
something like this in ASCII:

|_| |_| |_| |_| |_|

almost like a comb. Designed that way to allow the glue to seep out evenly onto 
the tile back.

But for Oleopasto, this wouldn't work, because it has a body density kinda like 
Petroleum Jelly, in that, it wouldn't level at all. It would just sit there, in a comb 
texture, or in a Mayer Rod texture.

I UPS'ed by prints to Robert today. I am very curious to what he's up to. I am 
open to be converted. Bring me into the flock, Jesus...

MT

On 9/23/02 12:12 PM, "Mark Tucker" <mtucker508@...> wrote:

> But for Oleopasto, this wouldn't work, because it has a body density kinda
> like 
> Petroleum Jelly, in that, it wouldn't level at all. It would just sit there,
> in a comb 
> texture, or in a Mayer Rod texture.

If its thick, then try screen coating....might be able to stand the shear.

Robert