Lee Brown posted an enquiry concerning the accuracy of recut rolls.
While I cannot answer his questions with any authority, MMDers might
be interested to know that the first roll perforator I ever saw in
action was the machine designed and built by Harry (who passed away
some time ago) and Sylvia Medcraft of Harrow, England.
Over the course of several years I spent many fascinating hours with
Harry and his Vesuvius-like pipe which he constantly relit with a
blowtorch. While I could find nothing wrong with his production
copies, it annoyed him that a few people challenged their accuracy
because the long-note laddering and scalloped slots were not exactly
the same as the originals. Furthermore, he said that these critics
would measure the length of his copy against that of the original and
the slightest difference would draw yet more adverse comment from them.
In my opinion these people could not see the wood for the trees.
Provided that a recut roll faultlessly duplicates the music contained
on the original, then it can accurately be described as a copy.