Need A Specific Hinge
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Discussion

Doofus

Original Poster:

34,528 posts

203 months

Tuesday 6th October
quotequote all
Building a shed worktop out of OSB. It'll be around 80cm deep, and the rear 30cm will be fixed with the front 50cm being hinged, so it can be dropped and lie vertically.

But I'd also like it to be raisable to vertical, so we can access storage underneath the rear fixed section.

Is there a hinge that will enable the top to go through 180° from vertical to vertical, but when at 90° (horizontal) there's no gap between the two sections?

ETA: Not barrel hinges, because I don't think they'll be strong enough.

Edited by Doofus on Tuesday 6th October 20:29

JoshSm

5,257 posts

67 months

Tuesday 6th October
quotequote all
Two way hinge set flush to the top surface? Similar to https://www.hafele.co.uk/en/product/two-way-hinge-...

There's also two way piano versions but not sure if they'd work.

Doofus

Original Poster:

34,528 posts

203 months

Tuesday 6th October
quotequote all
JoshSm said:
Two way hinge set flush to the top surface? Similar to https://www.hafele.co.uk/en/product/two-way-hinge-...

There's also two way piano versions but not sure if they'd work.
I'm not sure that going into the edge of the OSB will be strong enough. I think I need to mount on the top surface or the bottom.

Doofus

Original Poster:

34,528 posts

203 months

Tuesday 6th October
quotequote all
I think a "double knuckle" hinge is the answer. Small gap, but workable.

JoshSm

5,257 posts

67 months

Tuesday 6th October
quotequote all
The other option is just have two slightly different hinge points and two hinges and a strip of the worktop in between to join them? Opens up many more options.

If done that way you could (for example) have a piano hinge top and bottom at slightly different positions, set so they're flush to the surface, using one to go up and one to go down.

It's the double hinging that makes it difficult so just find a slightly different solution to achieve that from two regular ones.

Doofus

Original Poster:

34,528 posts

203 months

Wednesday 7th October
quotequote all
JoshSm said:
The other option is just have two slightly different hinge points and two hinges and a strip of the worktop in between to join them? Opens up many more options.

If done that way you could (for example) have a piano hinge top and bottom at slightly different positions, set so they're flush to the surface, using one to go up and one to go down.

It's the double hinging that makes it difficult so just find a slightly different solution to achieve that from two regular ones.
I thought about that, butthen I also need supports beneath to stop it flopping when in horizontal mode, and thise will get in the way when I need it to tdrop.

I'm now considering mounting the hinge using slots rather than holes, so I can pull it forward by 18mm for folding upwards.

I don't actually need it to fold both ways, but now I've decided I want it to, I'm determined to find a solution that, inevitably, I'll never exploit once completed. smile

Peanut Gallery

2,734 posts

140 months

Wednesday 7th October
quotequote all
I'm thinking bar / saloon door type hinge?

https://www.screwfix.com/p/eclipse-satin-stainless...


Set the hinge so that the fixed part of the hinge is mounted ontop of the fixed rear section of the countertop, and the moving part of the hinge is mounted underneath the moving part of the countertop. Add a strip of wood under the moving section of the countertop and above the moving section of the hinge so that the middle section is hanging straight down when the countertop is in the horizontal position.

The more weight you put on the countertop, this pushes the countertop harder against the fixed portion. I am sure you will find a way to "de-activate" the springs inside the hinge.

biggiles

2,175 posts

255 months

Wednesday 7th October
quotequote all
Why use a hinge at all? Unless it's a really heavy worktop (and OSB isn't) then just rest it on supports? You can then prop it vertically if needed.

PS OSB is useful stuff, but I think as a worktop surface it might be a bit too uneven?

Doofus

Original Poster:

34,528 posts

203 months

Wednesday 7th October
quotequote all
biggiles said:
Why use a hinge at all? Unless it's a really heavy worktop (and OSB isn't) then just rest it on supports? You can then prop it vertically if needed.

PS OSB is useful stuff, but I think as a worktop surface it might be a bit too uneven?
I use OSB in the garage and thenshed because it takes a lot of beating, and is easily replaced. I've never found it uneven.

Doofus

Original Poster:

34,528 posts

203 months

Wednesday 7th October
quotequote all
Peanut Gallery said:
I'm thinking bar / saloon door type hinge?

https://www.screwfix.com/p/eclipse-satin-stainless...
I can buy these without the spring. smile

Doofus

Original Poster:

34,528 posts

203 months

Wednesday 7th October
quotequote all
biggiles said:
Why use a hinge at all?
Only because I don't want the worktop to wobble in use.

And because I want to use a hinge. wink