Can you wet mould Plywood?

[Basha]

Yes to building up in thin layers for that radius with the grain going in the same direction Veneers would do, you can buy Flexi Ply and Flexi Veneer 8' x 4' sheets tho, go to a local Joinery firm they may have some small offcuts you could borrow or even slice you some Ash or whatever you fancy using for your throttle knob. Ply is built up of layers that run perpendicular to each other thats what makes it strong and hard to bend.