For various reasons, the place I would like to put a small (22" or 24") TV is on a shelf in a bookcase/wall unit - not one of those units with a nice bit gap in the middle for a media centre, but in an actual bookshelf. I'd like to be able to pull it out on an extendable arm that would then let me swivel it to different angles so that it could be seen from different points in the room, and then when I'm done, push it back into the shelf space (which is just about exactly the size of the TV).
The back of the bookcase is that cheap thin backing (like Ikea use), which is good for being able to cut holes in it to put the cables through, but not strong enough for an extendable arm with a wall mount.
So I was looking at maybe a clamp style one - because the backboard is so thin, it's also a bit flexible, so I think I could squeeze a slimline clamp in at the back, or otherwise drill a hole in the shelf near the back and use that. I might have to secure the shelf somehow, because it's one of those flat pack style ones where it rests on peg supports, and I wonder if having the weight of a TV when pulled out into the room would be enough to pull the shelf forward off the supports? But I expect there are supports that can be screwed in.
Would this be likely to work, or would it look kind of naff? Would the shelf tip forward? Has anyone used a similar sort of extendable arm, and does it hold a TV without sagging? I don't watch the TV much, and right now the furniture that it's on is taking up quite a bit of space in a very small flat, so I was thinking of ways to get rid of that.