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What kind of perforating and rules do the attachments use?

April 26, 2017attachments perforating rules

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What kind of perforating and rules do the attachments use?

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Actual letterpress rules. These rules are made of case-hardened and tempered steel, originally designed to strike against a steel bed or cylinder. However, with the IGI attachments, they only strike against a plastic or rubber “packing strip” that you peel the back off of and stick on the impression cylinder.