On Monday, June 29, 2015 at 9:07:44 PM UTC+1, jkn wrote:
Hi All
I have a little project in mind which will use some semi-rigid plastic sheet,
2mm or so thick. Something like those thin kitchen chopping boards you sometimes
see around.

I need to have part of this sheet hinged, so that it can withstand many bends of
approx. 180 degrees. Any thoughts about the best way to achieve this?

Scoring is probably not going to work because the material is too thick. I
thought about cutting a v-shaped channel out, but am wondering about the best way
to go about that.

I could even stitch the edge in a bookbinders fashion, which would probably
be very functional but look a bit retro.

Thoughts welcome...

Cheers
Jon N

You could try ring binding if it's not got to be airtight closed fit.