On 16/07/2020 10:24, Andy Burns wrote:
Smolley wrote:

Where could I get a piece of bent plywood

Normal plywood is very rigid because the grain direction of each layer
alternates within it, therefore it won't bend after it's manufactured.

You can get "bendy ply" and then glue/laminate several layers of it into
any reasonable shape, but you'll need plenty of clamps and asuitable
former ...

Agreed. Though I did once impress my late father-in-law (master builder,
and amazing carpenter) by bending 1.5 metres of skirting board to fit a
curved chimney breast (about 40 cm iirc) by putting it inside a vertical
length of cement-asbestos drain pipe with a steam cleaner hose into the
bottom for about half an hour. You would probably get away with ABS soil
pipe too.