I need a hinge to do this......

[mickthetree]

the only way I can see that you can do this is to have something like this:

The corners has no way of moving round each other.

Actually the other option would be to have interleaving fingers and a pin all the way though. You would need to round the bottom corners of all the fingers but these wouldn't be seen once it is in place.

HTH

 

[doorframe]

I've looked at the big wooden hinge joint as an option, but typically it's good old chipboard, so the wooden hinge would have to be a separate piece. Still a possibility though.

There will be two chrome round legs, that the flap will rest against when down.

Mick Tree, I can't see your pics.

When I chewed this over in my mind it didn't seem so awkward. Now the more I look at it the more of a problem it seems to be. Trouble is I've already had my orders from swimbo. Thanks everyone for your suggestions so far.

 

[mickthetree]

not sure whats happening with the pictures. Cant see them myself!!

The finger joint option would work, but only if you make the worktops yourself!

 

[SteveF]

http://web2.hettich.com/hbh/Start.do?lo ... emId=73926

http://sugatsune.com/products/ProductDe ... 0-C34%2F28

Steve

 

[Mr T]

I think soss hinges, like these would work http://www.ratman.co.uk/images/uploads/product_images/SOSS_group_image.jpg The problem is that you will be fitting them into chip board. You could let a piece of hardwood into the core of the board to take the hinges and screws.

Chris

 

[xy mosian]

In order for this to have a chance of working. The pivot point of the hinge needs to be equally distant from each corner of the 'flap' when it is in both positions. Five minutes with Sketchup shows that this point is 19mm from the edge of the 'shelf' and 20mm below the top surface. These dimensions need to be checked. I have seen hinges that would do this but of course I cannot remember where, they may be inventions of course. I'll look around. Of course a very specialist hinge might perform in such a way as to shift the mechanism, making a virtual pivot point. Think a sliding arc here.
xy

 

[doorframe]

From Steve F's link...

http://sugatsune.com/products/ProductDetails.cfm?CATID=5&SUBCATID=10&PRODUCTID=T-90-200

This is designed for 18-20mm.

This would be perfect in a larger size designed for 40mm.

 

[SteveF]

could this be recessed into top?

Steve

 

[doorframe]

Well, it's been a while since I asked for advise on this, so this weekend just gone I set out on a mission, and this is what I came up with...

From this....

To this....

1st operation is to slide the flap out....

From underneath, it goes from this....

To this (the 2 SS slides have moved out 40mm, untill the rubber stops hit the white crossbar (PTFE BLOCK))....

Then simply lift the flap and slide out the 3rd leg (untill the slide bar hits the stop)....

The Crossbar is made up of PTFE blocks, braced with SS, which is all bolted through to the disc which the legs screw onto. So the whole weight of the flap is taken directly on the legs. The 3rd leg was originally just a slide out bar, but it was far to bouncy at the end of the flap, so after work tonight I added the leg and now it's solid.
It only takes about 5 seconds (if that) to put up and take down. Total length just over 6ft and will seat 6, if I had the chairs!!

The important thing is........ swmbo likes it!!

 

[rafezetter]

very neat, looks good.

 

[wellywood]

Total length just over 6ft and will seat 6, if I had the chairs!!

The important thing is........ swmbo likes it!!

So now you know what your next project is