Lombok keris fullers and age query

[Ian]

Hi Alan,

In the following statement you refer to rules that apply to keris-making that might well vary by place and time.

In the creation of a keris there are certain rules that must be applied to the formation of each part of a keris, and there are standards that must be applied to the work that has been carried out in order to complete the keris.

Are these rules written down so that we may access them today, or were they passed on simply by word of mouth and apprenticeship. I would be interested to know, for example, what the length of the sogokan should be in proportion to the overall blade. This is perhaps an overly simple question and again will probably vary by time and place. But I'm interested in how these rules were promulgated.

Regards,

Ian.