Wind turbine blade shear web

A method of making a wind turbine blade shear web, the method comprising:

• providing a shear web mould having a longitudinally-extending main surface shaped to form a main panel of the shear web, the main surface having a planar portion, and first and second longitudinally-extending side surfaces extending from the main surface in a first direction and a second direction, respectively, and shaped to form respective first and second flange portions of the shear web,
• arranging one or more layers of fibrous material against the main surface and against the first and second side surfaces of the mould to form a layup that is generally C-shaped in cross-section;
• arranging a pre-cured return flange on the layup such that a portion of the pre-cured return flange overlies the planar portion of the main surface of the mould and no portion of the pre-cured return flange extends in the first or second directions toward the first or second side surfaces, respectively, the pre-cured return flange being generally L-shaped in cross-section;
• providing uncured resin to the fibrous material of the layup and between the layup and the pre-cured return flange;
• and
• curing the uncured resin to co-bond the pre-cured return flange and the C-shaped layup.