This website provides evidence for molding:
“ My name is Ewald Schuster. I am not an archeologist, but I have been involved with making molds and molded parts for the majority of my life, whether it be machined molds or hand carved molds and plugs. I thought I would start this website to share what I found at Puma Punku. I am doing this to show you all of the signs that molded parts have, even by today's standards, like parting lines, mold seams, and filling hard to fill spots that a composite would normally have a hard time to mold into. I am looking at this from the perspective that the people who built this place did it on their own accord; there seems to be a lot of talk that aliens helped build this place, but I am taking a more scientific view of it and giving credit where credit belongs. I will also show how I think these molds were made with materials that are easy to work with and were readily available to the people who made this amazing place.
[pumapunkutheories.webs.com]
“ My name is Ewald Schuster. I am not an archeologist, but I have been involved with making molds and molded parts for the majority of my life, whether it be machined molds or hand carved molds and plugs. I thought I would start this website to share what I found at Puma Punku. I am doing this to show you all of the signs that molded parts have, even by today's standards, like parting lines, mold seams, and filling hard to fill spots that a composite would normally have a hard time to mold into. I am looking at this from the perspective that the people who built this place did it on their own accord; there seems to be a lot of talk that aliens helped build this place, but I am taking a more scientific view of it and giving credit where credit belongs. I will also show how I think these molds were made with materials that are easy to work with and were readily available to the people who made this amazing place.
[pumapunkutheories.webs.com]