As a statement made by Keizo Murase I wrote about a housewife who worked part-time for Ex Production in my previous post, and there seem to have been some housewives who helped to sculpt kauju costumes back then while working part-time.
A talk featured in an issue of Tokusatsu Hiho (secret treasure) made between Eizo Kaimai and Keizo Murase, both of whom were involved in sculpting work at Toho for the movies including the Godzilla series, revealed Kato-san referred to in my previous post was one of them, and it is likely that she could do almost every piece of work related to sculpting as she had been working for Toho as a part-time assistant for sculpting.
While the moderator in the talk says he has often heard of Kato-san’s name as Kato-no-obachan (obachan, not obaachan as it denotes an older woman, represents “auntie” but it can also be used for a middle-aged woman who is close to you when you call her or refer to her in a friendly way; no is a Japanese modifying particle explaining the attribute of the obachan in this case), Murase says in the talk that Kato-san was so helpful because she was kind enough to bring would-be part-timers together who would rally around her whenever she called them.
Kaimai and Murase say pasting the scales onto the King Ghidora costume was the work done by those obachans including Kato-san as those including her and her kids spread latex onto the scale mold, cast it out, cut each scale out of the sheet cast out of the mold with scissors and pasted them from the lower part of the costume (to make the scales come over one another).
While the Ghidora heads and legs were sculpted separately from the body to be put together later, it seems that the scales were pasted temporarily leaving some marginal space scaleless about 10 centimeters in length from each end of the separate parts so that the people could put the scales onto the joined sections after the separate parts came together.