Re: [PPLetterpress] Building up roller tracks
One thing about the adjustable rubber trucks that Zida mentioned is that you MUST take the pressure off them every night, or the next day you'll have a flat spot!
I use an old piece of 6 or 8 pica furniture to wedge behind the roller tension spring, which pushes the roller trucks from the track by an eighth or a quarter inch or so... That's on the 10x15 oldstyle Gordon C&P
However, your symptoms sound more like a problem with sags or depressions in the rollers themselves.
Might be time for a new set!
At 10:23 AM -0700 2003-10-10, Zida Borcich wrote:
>I have had the same experiences many times on my C&P.
>If you have those kind of roller trucks that you can adjust,
>it could have something to do with their being out of round.
>I had plastic roller trucks milled and it seemed to help a
>bit. Composition rollers can get funky that way too. I tape
>hard paper to the runners if the rollers are too close. Tape
>works too. You have to change in now and then if you
>are using the press a lot. It's all so esoteric. Mostly
>I just use my Heidelbergs these days because it was getting
>so time consuming to deal with the Black Art over in C&P-
>landia, much as I love my little 1923 10x15.
>Best of luck,
>Carole Aldrich wrote:
>> I was having some difficulty getting a good impression on my C&P Pilot Press. Harold
>> Kyle of Boxcar press suggested that I needed to build up the roller tracks. This greatly
>> improved printing. However, it seems that using tape to do this would require
>> constant fiddling as the tape compresses over time. Does anyone have a more
>> permanent solution.
>> I also had a problem with uneven inking. I would be printing successfully and would
>> start to experience lighter areas. Either left, right or center of my plate. It was not
>> consistent. I took that as I sign that I needed to add more ink. In spite of what I
>> thought was careful reinking, I would get another light spot which would not respond
>> to any adjustments. I kept using makeready sheets during these adjustments to keep
>> from using my "good" paper. If I raised the plate with a tiny piece of thin paper, it
>> would ink too much. If I took the paper away, too little. Ditto for adjustments to my
>> tape on the roller tracks. Adding a piece was too much, without it, too little. Seems
>> like there was constant fiddling throughout the print run.
>> Is this usual, or do I need to be doing something differently.
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> hmmm...Stop! the vinegar will eat the polymer right up. That's what one is to use
> may be i'll dunk a piece of polymer into vinegar to see if it does anything...
> report back).
when cleaning platemaking equipment. It just melts the stuff.