Thread:Cdrzillafanon/@comment-32001308-20171008112918/@comment-30161070-20171008120033

(facepalm)

You go to your user page, and type in "/Sandbox" after the url. If you want to make a seperate sandbox, you type "/(insert page title)" into the url after that. To make it a normal page you simply copy the page and paste it onto a normal page. In my experience it's best to copy it in source and then paste it in source, especially if you're stuck with the classic editor.