Its been awhile since I've re-cut film to smaller sizes...but I do remember having some problems with a run of the mill guillotine type cutter - which tended to create sharp, slightly raised "ridges" on the cut side of the films. These ridges would then often lead to film scratching during shuffle (tray) development.
A roller type (circular blade) cutter solved the above issue, at least for me....although I think a top quality guillotine cutter would work fine, if used with care.
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