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    Sewing thread question

    If you operate a sewing binding machine, hopefully you can enlighten me here. I have friends who work in traditional (hand) bookbinding and the topic of thread 'swell' came up. They aim for the sewing to add 20-25% to the thickness of the book at the spine edge. This swell is desired for...
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    Hot Foil over Spot UV & double-sided Spot UV

    Happy new year fellow PrintPlanetarians. I'm coming at this from the graphic design side, unable to find literature on these matters... Is it possible (or undesirable) to hot foil over Spot UV? Has it been done before? Will it be done again? Is Spot UV ever done double-sided?
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    Imposition & paper side

    Hi all, I've been looking at using two-sided papers with a heavy felt-marked side and smooth wire side. I've read that the paper is supplied as it comes off the mill - felt side up. Does that mean (using the imposition below), it would be an automatic assumption that pp 1,4-5,8-9,12-13,16 will...
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    Choosing the paper surface side

    (I posted a similar topic under Ink & consumables, but I'm specifically interested in this topic in relation to offset printing technique so have modified it for here). My question stems from handling genuine sheep/calfskin vellum, where there's a smooth 'flesh' side that's prized for writing...
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    Rough Side/Smooth Side Paper

    My question stems from handling genuine sheep/calfskin vellum, where there's a smooth 'flesh' side that's prized for writing, and the rough 'hair' side that is not favored. When you encounter papers which have this quality - one side smooth, the other rough (such as Zerkall papers, or even...
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    Sheet Imposition Formula

    Hi all, I'm coming at this as a graphic designer --- someone without imposition software for offset printing, or enough knowledge (yet!) on sheet imposition. I'm looking at formulas for determining the possible Section Folds+Trim Sizes for different sheet sizes from different mills (eg...
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    requirements for inline flexo

    Hi everyone, I'm wondering where I can find either a book/tutorial or guidelines for flexo-printed artwork via coating unit - such as how much misregistration, minimum positive line weights/reserve outs, issues with large coated areas. I thought I might have some luck reading up on Cyrel...
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    Striking-Thru uncoated paper

    Hi everyone, I'm looking at the possibility of using strike-thru on uncoated paper for better registration and hairline details. The challenge is to make the gloss areas pop despite the absorbent substrate, and to not change the quality of paper in the unprinted & matte areas (from...
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    the limits of Spot UV

    Hi guys, I've been compiling different artwork guidelines for Spot UV and these are the results on minimum line weights, reverse-outs and misregistration. I'm wondering what you'll make of them... Minimum line weight: Avoid positive lines thinner than 1 mm; though it is possible to achieve...
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    Oleoresinous varnishes and acid

    I recall hearing somewhere that they increase in acidity with age, but I stand to be corrected. Would you ever use oleoresinous on printing intended to last?
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    Different types or brands of plates for the one job

    Is this ever done? As a hypothetical example, if a client had a regular CMYK job which needed 240lpi, but had +1 spot which requires a plate with practically security-level detail. Would just that plate be a different brand/type?
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    Comparison of Deep-Etch to digital thermal plates

    Does anybody still do deep-etch plates? Just wondering how it compares to the best in digital thermal plates...
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    General expectations for PDF file size

    I can't find much discussion in other forums about the expected file sizes of generic book jobs. For example, a 32pp 4/4 magazine or children's picture book with 300dpi images, or a 6 " x 9 " 224pp 1/1 novel. Asking as I'm following the Ghent Workshop PDF/X workflow for a current job but my...
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    Vantablack / Black 3.0 and the blackest ink

    Hello, I've noticed this topic seems largely uncovered (internet searches simply find double-hits & rich blacks), so decided to post it here. All thoughts welcome! In the past 5 or so years there's continual news about the quest for the blackest black - whether artist's paints absorbing 98%...
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    Diffusion Dither verses FM Screen

    Just wondering for a 2400dpi greyscale image, what the visual quality difference would be between using 10μm or 20μm FM screen verses converting the image to a 2400dpi bitmap with diffusion dither?
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    Sheetfed UV - alternative ink & AQ sequence

    Just wondering if an uncoated paper was aqueous primed first, and then printed with UV inks, whether this'd allow for denser colours than if it didn't have the AQ?
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    How solid can varnish be tinted?

    Hello, I'm a new member and this is my first topic post. I've spent a lot of time reading these forums to aid my print education, thanks everyone. I've read in regards to offset printing and varnishes that 1) varnishes can be tinted with pigment, and 2) varnishes, applied via a plate, can...

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