Core panels for a wind turbine blade

A method of forming curved panels for a core of a wind turbine blade, the method comprising:

• providing a mould, the mould a sheet and a plurality of actuation devices;
• controlling, via at least one processor, an arrangement of the plurality of actuation devices to curve the sheet based on a digital design file including a representation of a curved shape of a first curved panel to be moulded;
• moulding heated stock material by pressing the heated stock material onto the sheet to form the first curved panel;
• controlling, via the at least one processor, a rearrangement of the plurality of actuation devices to curve the sheet based on the digital design file including a representation of a curved shape of a second curved panel to be moulded;
• and
• moulding heating stock material by pressing the heated stock material onto the sheet to form the second panel,
• wherein the digital design file defines the core of at least part of the wind turbine blade that has been divided into curved panels, and
• wherein the first and second panels may be assembled together to form the core of the at least part of the wind turbine blade.