How do I mount a chalk board on a curved wall? the board is 4X6 feet, and the curve is only just enough...

the board is 4X6 feet, and the curve is only just enough that the board can't be put up short some type of support. The curve is shallow at each extremity and about 3 to 5 inches contained by depth at the center.
I'm looking for a detailed procedure to do this job, or a tiniest a link.

Thanks,
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Any course you mount it, the board will require additional support.

Cut length of wood 6' long, screw it to the wall at the ends, seeking a stud. Attach the chalkboard to the wood. You should have support at the top, middle and bottom, so that the chalkboard doesn't warp, shake, or droop.

Alternately, apply 'chalkboard paint' to the wall itself. On a smooth surface, the black paint seal the wall so that chalk can be used directly 'on' the wall, and wiped away.
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I wouldn't because it will look approaching crap.

What I would do is make a frame out of trim that I could confidently get to conform to my wall and paint the framed nouns with "chalk board paint" available at any paint store.
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Answers:    Take a jig saw and cut two pieces of plywood conformed to the curve of the wall..attach the curved plywood to the curve..going away the staright edge sticking out..them mount the chalk board to the flat surface..You can clutch and measure trhe 6 foot width....of the chalk board on the wall...afterwards take a shaving piece of cardboard ..and tie a string on a pencil...hold the string at differnt lengths on the cardbord, tied to the pencil(make the cardboard 6 foot wide too)...smudge the cardboard with the pencil..consequently cut the arc out..if too deep or shallow and dont fit on the wall properly..try again and any lengthen the string or shorten it...once you enjoy the arc figured out beside this template...trace the edge onto the cardboard..after cut it out with the jigsaw..take a little messing beside..but simply make the string shorter or longer..untill u obtain a 6 foot piece of cardboard to fit perfectly on the curve on the wall...
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You're going to enjoy to support it, so get creative to screen or blend in the support. The 1st belief sounds pretty good to me!