David, thank you for your latest and most estrogen charged response thus far!
My reason for believing that Rerajahan are part of keris construction is because I have both read AND been told multiple times! Such information is even casually mentioned such as:
"The selected
metals are inscribed with rerajahan
(magical symbols) before they are processed.
Every work step is accompanied by mantras
(incantations) and sacrifices. An auspicious day
is chosen for the basupati, the awakening ceremony
for the finished blade."
pg48 The Gods and the Forge
"He explained, the first factor was the selection and method of obtaining the raw materials obtained by conducting semedi. Secondly, it relates to the selection of a good or two-day day when starting work, followed by an offering ceremony and a prayer for mutual safety. Both for the creator and the person who uses it later.
While the third factor, continued the former male English language teacher, the element of
entering the rerajahan, puja mantra according to what was expected. After completing, he continued, then entered or often called the Pasupati on the chosen day, and the ceremony must also be in accordance with the needs of the keris. "The last is the maintenance of physical and non-physical keris for sustainability," explained
a painting collector who is also an observer of art."
https://baliexpress.jawapos.com/read...ga-taksu-keris