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→Appendix 1: Some Notes on Spring Steel
When a bending load is applied, a blade should take up the load progressively without yield or set. The deflection of the blade should be proportional to the varying load applied to it (a slight variation on Hooke’s Law). When the load is released, the blade should spring quickly back to its original state, exhibiting no evidence of deformation.<br>
{||-|'''Notch Hardness (Strike) Test'''<br>
[[File:MaA Strike Test.JPG|thumb|left|300px|The Strike Test]]
When the edge of a blade is struck with reasonable force by the edge of another blade of known and approved properties, the edge of the struck blade should not show excessive burring or chipping. On inspection of any notch produced in the struck blade, the depth of the notch should not exceed more than half of the width of the notch (see fig below).<br>
'''NOTE'''<br>
Pattern welded or leaf welded blades may be considered to be a “composite spring” steel and although these blades will all be judged on their own merit, the above tests may be applied to determine their suitability for reenactment use.
|}
==Appendix 2: How To Fit a Spear Head==
