Here's that previous post: http://forestwildlifeart.blogspot.co.uk/2013/10/making-prints-from-oil-paintings.html
In that post I said the main drawback with Multimedia Artboard® is that it's brittle when unsupported and will snap like a twig, so you have to mount it on something. This can be a time consuming process of cutting the Artboard, then cutting something like foam board to mount it on, then carefully spreading the Yes! glue around evenly without getting any on your painting side, etc. Not a laugh-a-minute way to spend your morning before you can even start painting.
But, the purpose of this post is to share the news that Multimedia Artboard® is now available already mounted on Sintra® foam board for your convenience! I'm not sure how long it's been available but since it still says "New" on the website I'm guessing it's not been long. Good news for those of us who don't want to spend hours cutting and gluing and just want to get to painting!