by Raymond » 28 Oct 2007 3:17
Don't let em fool you. You most certainly can hand file a key for a Best core. Just do it one space at a time. After loading one bottom pin, master wafer, control pin and top pin, use a nail or punch to provide positive pressure and file only a little at a time until 1. the plug turns, and 2. with another blank the core retaining lug moves. Dump (carefully and in order) out that stack of pins and load the next space. As stated earlier, the biggest difficulty will be guessing which cuts are actually the true master.
Nothing is foolproof to a talented fool. Wisdom is not just in determining how to do something, but also includes determining whether it should be done at all.