I just bought one of those plastic easels for my 3 year olds at a garage sale. It's made out of that plastic that all the new jungle-gym type toys are made of.
On one side I want to put on that chalk-board paint.
So, how do I prime that kind of plastic so paint will stick to it well?
Actually, a good cleaning with TSP might be just as good. I've done it with gas cans and the results were superb. I -think-, not sure, Krylon sells a spray primer that should be excellent for your purposes.
Never tried it but Krylon makes a paint specifically for bonding to plastics (Krylon Fusion). I would ask if it was compatible with the chalkboard paint and then use it as a primer. There is very little info on their web site other than color selection.
You would be better off, in my opinion, to use a piece of hardboard for the chalk board. Paint it with the chalk board paint then attach it. You will get poor results just painting the plastic in my experience.
"Hardboard" is not hardwood, in case I'm using a term that is not familiar to you. Hardboard is available at Lowes and Home depot in 2x4, 4x4 and 4x8 size. They will cut it for you to size. Its 1/4" thick, more or less, dark brown in color. Its also sometimes called masonite, a brand name.
Its on Home Cheapos web site, not sure if this URL will work for you
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Their description is Eucaboard
3/16 In. x 4 Ft. x 8 Ft. Service Tempered hardboard Model 832780
I know my local store has it, as I said, 4x8, 4x4, 2x4 sizes although website only shows 4x8.
This is really the best way to go in my opinion.
The plastic, if its the kind I am envisioning, will hold 4 drywall screws. Probably all that's needed to attach it. To dress it up more you could use some decorative washers. Like these
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Wow, I'm really spending too much time on these posts!
IF you go the add on hardboard route, you can also buy from HD and Lowes a white melamine bath panel (4X8 about $10)and use whiteboard markers instead of chaulk. Its alittle bit neater (until the kids start marking on the walls). I have also seen whiteboard paint.
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