Rotatrim scorer/trimmer

Does anybody have any experience using the Rotatrim Scorer/Trimmer
machine for making phase boxes?  It is advertised in the 1992/1993
University Products catalog for Archival Quality Materials.  We make
a lot of in house boxes for fragile and brittle books and from the
description, it looks like this could expedite the process.  I would
appreciate any comments and observations.

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                  Conservation DistList Instance 6:32
                Distributed: Saturday, December 12, 1992
                        Message Id: cdl-6-32-009
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