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"no bulp of percussion" thinning

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JackCrafty:
A perverse fracture will snap a point in half but it will not look like a perfect "snap" break, if you know what I mean.  On a small scale, a perverse fracture is the thing that takes off a barb when you're trying to notch a point.  Especially with deep notches.  The "wave" of the fracture doesn't run parallel to the face to create a shell-like scar.  It turns almost perpendicular and "slices" through the workpiece.  There are pictures out there of artifacts with this type of fracture but it may take a while to find a good one...

JackCrafty:
Oh yeah, you can also look up "Perverse Fracture" and "Bending Initiation" in my glossary of terms.  I updated a few terms like "Transverse Fracture" and related stuff but the first two terms have not been modified.   ;D

iowabow:
Caneman, now that I know the trem yes I am on the edge of a perverse facture. Thank you Patrick. I never knew the name of that before thank you guys.

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