What is this mounting technique?

[Jon_Brooke]

This came up on my instagram feed - David Shrigley prints being float mounted - but near the end you can see one of the prints with lots of tabs sticking out around the print while it is on the mountboard.

What's going on? Is it normal/optimal to be using so many hinges?

https://www.instagram.com/reel/DH24o-Yo ... _copy_link

[JKX]

They’re either using pass through hinges or the hedgehog method - it’s a normal amount of hinges for either method.

[Justintime]

Hard to see exactly the technique he's using in that short a time but that amount of hinges looks normal for mounting onto a slightly smaller undermount and floating like that. There are popular techniques like the hedgehog and some more individual styles I have seen, all based on the same concept. As far as cockling goes, paper can be a cruel mistress. I stay well clear of pass through hinges these days after a cockling incident on a valuable print, but some swear by it and haven't had any issues.

[prospero]

You have to 'play it by ear' to some extent. All papers are different and behave differently.
The general principle is to use as few hinges as possible and make the top edge ones 'hard'
and any side/bottom ones 'loose'. That is, with a bit of lateral 'give'. On big things
you maybe should do one hard hinge at the top and the other loose. A so-called pendulum hinge.
Sometimes,with the best will in the world, things will go wavy. That's how you learn.