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Perforation errors http://www.gbps.org.uk/boards/viewtopic.php?f=31&t=1246 |
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Author: | owenmac [ Fri Nov 13, 2020 9:12 am ] | ||
Post subject: | Re: Perforation errors | ||
Hi Robin Here I also have a copy of the same encroachment on the same cylinder, however, mine even with a perf guide is accurate so not quite sure. regards Owen
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Author: | Robinr [ Sun Nov 29, 2020 1:14 pm ] |
Post subject: | Re: Perforation errors |
Hi Owen, Wonderful to get a reply, albeit ten years later than the question. Many thanks! Since then I have a lot more experience studying perforator encroachments and false 6B perforations, nearly all with KE8 material. Even so I can only guess a comment on your block. The panes were perforated seven at a time, that being the maximum number of sheets the machine could safely punch through without causing cloggings. This meant that there were seven copies of every remarkable deviant perforation and these would be virtually identical. My guess is that your block and mine are from the same batch of seven that went into the machine and received that distinctive false 6B perforation. Cheers! Robin |
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