Instructables
Picture of 3x1 Folding Chalkboard Tray
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I have kids and I have a husband with a laptop...so i wanted to make a table to cater to all their needs.

Step 1: What you need

Picture of What you need
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Print out the cut list and go shopping if you don't have these stuff at home.
In addition... you would need ....
Bolts and wing nuts with washers
Black vinyl.
Screw nails
i have used a pantry door that i had. I'm sorry but i don't have the steps.. covering the door with black vinyl.
I have used 3/4" thick wood for all except for  2 of the  12" slats and the long pressure bar.... but you could go with 3/4" for all if you like

Step 2: The pressure bar.

Picture of The pressure bar.
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To hold the legs firmly i add a pressure bar about 4" longer than the length of the table so about 31" long. drill a hole right in the center of the table from all 4 sides...
then another 2 more on either side..about 1.5" apart.

Step 3: Bed tray

Cover your plywood with black vinyl.

Follow the diagram and make two arms for the table. use screw nails and glue so it would hold strong. from the bottom...that is C measure 10 inches and glue the 1/2"x1"x12" (B). now..mark and screw  hinges..so that it's aligned with the top of B..refer pictures.
Now turn the table upside down and fix the arms of the table.  close the legs and fix the pressure bar.
If you open up... your bed tray is done...or  almost done.
your table will stand firm now...but to avoid the risk of it suddenly folding up on you...do the following steps...i think it's very important.
Mark where the pressure bar meets the arms when the table is open and standing. mark it on both sides.
Cut the thickness of the wood halfway...see picture. Now when you open it'll move to the cleat and be secure...to close...just push down the pressure bar and it'll close.
Your bed tray is done....and it's very firm :-)
If you decide to stop here...give your kids some chalk and let them have some fun. :-D
 
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galadriel2 years ago
Very nice. Very very nice.

In case anyone doesn't already know, you can get paint that will let you make a chalkboard surface, also paint that will let you make a whiteboard surface. You can also buy sheets of wood with a coating that makes a good whiteboard.

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I wonder if a dowel on the straight swivel leg, with a corresponding hole on the arm of the other leg, might let you convert it without tools.

There's also something called a "snap button" which you might be able to find a use for here, or perhaps you could use a metal frame, like a corner bracket, that the swivel arm slides into.
shazni (author)  galadriel2 years ago
Thanks! yes...you do get those paints....but not in sri lanka...if it's there...it's somewhere i don't know about and probably very expensive!! (for chalk board you have to make your own.) there are no forstner bits and plug cutters too..i checked believe me !!! i ordered some from ebay and i'm waiting for it...hmmm very impatient! :-)...
your snap button gave me an idea....perhaps i should insert magnets?? good idea??
was thinking of it...but wanted to enter in the speed challenge...so will do it once i go and get some magnets.
Thanks again...i've entered in the woodworking and make it real...so please dont forget to rate...and if you like vote :-)
Oh, oh, I didn't intend any criticism of your blackboard method! I was just trying to put a bit more info out there. If what you did works, hey, it works, and that's as perfect as it needs to be.

Magnets sound great, I bet strong ones would work well.

For the dowel I mentioned--can you get dowels where you are? You don't need a special bit to cut a hole juuuuust the same diameter as the dowel; you just need a regular bit. Then you can attach a dowel to one leg, and slide it into the hole on the other leg. As long as the fit is snug--not too tight to put the dowel in, not so loose it comes back out--it should stay pretty securely, I think.

I can draw you a picture if it would help, too.
shazni (author)  galadriel2 years ago
Thanks for your ideas...and no...i didn't take it as a criticism....:-D it's cool.
I have incorporated your dowel idea...and also my magnet idea and made it tool free!
check it out...
btw...it's nice to know there are more females into woodwork and I'm not the only weirdo! I've told my husband i prefer power tools to gold for gifts...haha!
By the way, these are the snap buttons I was talking about:
http://www.valcocleve.com/

I've used them to latch two telescoping pieces of PVC. I'm not quite clear in my head about how they could be used for this, but I'm sure it's possible.
Creativeman2 years ago
This looks very useful. Good job!
shazni (author)  Creativeman2 years ago
Thanks a lot! it's already in use :-D