Dating machine cut nails dating women in mauritius send thread
Early heading machines grabbed the nail from the side and left quite a noticeable imprint when it did so.
After 1835, a new method of heading nails was employed and this machine grabbed and held the nail on its face leaving a recognizable indentation on the face.
This process produced an inferior nail that could not be clinched but their low cost far out weighed this disadvantage.
Consequently, from 1790 to 1848 the grain of a machine cut nail runs across rather than with the length of the shaft.
Antique dealers who learn to recognize these five styles of nails can date country and primitive furniture to within a twenty-year period and by combining nail technology with those of hinges, screws, latches, saw marks, and plane marks can pinpoint the actual construction date to within ten years.
Edwards and Tom Wells, researchers from Louisiana State University, have published a working paper on historical nail technology.
A close inspection of a handmade nail will often reveal the method used and therefore its approximate age.
At the other end of this scale is group 10, a square cut steel nail introduced in 1885 that had a short life span because it was almost immediately replaced by the wire nail.
In 1848, a new machine was introduced that cut nails, once again, in-line with the grain of wrought iron.
This machine was used until steel replaced wrought iron in 1885.