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Hello @SkitzO
Welcome to the Bunnings Workshop community. It's fabulous to have you join us, and thank you for sharing your question about how to build a portable whiteboard.
I've actually had a colleague at the store test the 1220 x 915mm 3.2mm Masonite Whitecote to see if the whiteboard marker comes off. She did say that it comes off, but smudges were left behind. I recommend instead using 3mm Composite Panel White / Black Aluminium. It is an aluminium composite panel with gloss white one side/gloss black one side. It is ideal for use as a whiteboard.
You mentioned that you wanted it portable. Did you have a particular size in mind? Did you want it self standing? If you can provide me with this information I'll be able to draw you up a design that will satisfy your needs. If you need other features added to the design, please make sure to add it to your next post.
If you have any other questions we can help with, please don't hesitate to post them.
Eric
Hi @EricL,
Thank you for the insight.
In response to your questions I would like to build a floor whiteboard so it can be used in a classroom as a group task. Ideally I would like it to fold out, like a concertina possibly, and fold back up easily with a handle (maybe 2) so it can be carried to another classroom with ease. It would have to be a somewhat decent size for multiple students to sit around. Maybe 1.8m-2.6m depending on the sizes of the panels.
Thank you again for your help. 
Hello @SkitzO
Were you thinking of having it in an "A" frame type system? When you say concertina, were you referring to the full height of the board? The panels are 1220mm x 2440mm so having them joined together would be huge and heavy that's why I was asking about the "A" frame layout. I've placed a sketch below, if it's not what you're after, would it be possible for you to post a photo or sketch of what you had in mind?
Eric
