The forum where this was originally posted was called "Imprime - recorta - pega" (print-cut-glue).
Parts of it can still be accessed via the wayback machine:
https://web.archive.org/web/20150801...corta-pega.com
Apparently the site closed down sometime in 2015 or 2016 because of financial problems to pay the host.
They had a discussion forum, and a dedicated section to downloads with detailed information on each kit, and proper links to the designers' sites.
Although I think the site was based in Argentina, people from other Latin American countries participated.
Keymaker was one of the main collaborators of that site. And if you remember the anime figures by Alcli0ne, he was also active there in the beginning before he closed his site.
I never engaged much there because they were mainly dedicated to helmets, Sci-fi, props, and anime-comic figures. "Traditional" and more complex subjects like the ones I'm used to were just a fraction of their usual discussion.