Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 371
fastening against the wall, perhapsthe easiest way is to saw the string with a finesaw, across the face, making parallel grooves.This method of bending is called kerfing,above referred to. The kerfs or groovesmust be cut parallel to the lines of the risers, so as to be vertical whenthe string is in… … Fig. 57. Geometrical Stairwith Seven Winders.
Architecture · Building
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