: Use a program like 7-Zip or WinRAR to unzip the contents of ra7.zip .
While specific designs vary, most RA-7 paper models follow this general order: ra7.zip
: You will typically need heavy cardstock paper (160–200 gsm), a sharp craft knife (X-Acto), scissors, a metal ruler for scoring, and white glue or a glue stick. : Use a program like 7-Zip or WinRAR
If you are not working on a craft project, "ra7.zip" may refer to: a sharp craft knife (X-Acto)