In preparation for a talk I'm giving at the upcoming St. Louis Ladies of Letterpress Conference, I'm curious how you calculate the paper overage on your printing jobs:
How do you determine how much extra paper to cut in advance of a print run?
Do you have any rules of thumb or formulas or percentages?
What factors do you consider?
How much do you rely on intuition?
Thanks for sharing your thoughts!
I took a letterpress class from Nathan Atkinson, lifelong printer, at San Francisco City College and his course material included the following:
also he advises:
In my own experience as a newbie with a rather worn down tabletop press, my spoilage is more like 5%.
Best regards, -Dee
I also use the 3% rule for each run. I now run sample sheets for lining up different color runs that help cut down on 3%, but there are always the few that go in crooked. So I am happy to have the 3% overage.
I generally print 25% extra, to both account for spoilage and to have samples for the designer and for myself. I know that's a lot, but it lowers the stress level!
I created a spreadsheet with at least 10 parent sizes so I can calculate how many out of a number of standard sizes all at once. If the 25% causes a new sheet to be used for only a few press sheets, I won't cut that one. I can also choose a different parent sheet size to minimize price and maximize how many out of a sheet.
Brian Allen :: retiring printer :: www.artisanprinter.com
Durham, North Carolina, USA