Depending on the context and the material...
Debris
Filings
Shavings
Scrap
End-cuts
Waste
Remnants
Dust
Bits
Excess
Overflow
...
SWARF is still the best descriptor.
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Gotta agree with Markus — any colour other than that banal beige-brown.
I've seen stock colours of it in PCB-
green (not that weak pathetic milky-pale stripboard-green),
blue and
black.
Apparently you can order vero in different colours — I can't understand why more colours aren't then offered. $$$
I have used X-acto blades, box-cutters, utility-knives, small hacksaws, have a Dremmel and similar...
To me, it's all the same. A sharp box-cutter is just as good as a utility-razor blade, no problems using either — sorry
@fontoponto.
I've yet to try a jeweller's saw, but will not likely get one as I don't like vero, prefer perf over that and proper PCBs over perf.
Even P2P is preferred to vero.