I needed a custom hood to fit 2 lights for my 2 foot long tank, so I bought lengths of whitewood (that's what it says on the label) from Homebase last weekend.
They're long lengths of wood, about an inch thick, and various widths - 10cm, 15cm.
I sawed them to size using a hand saw, since I have no power saw, and I sanded all the pieces.
It will be in the style of juwel hoods. There will be a piece of wood across the middle of the top to screw the lights onto, and 2 flaps on either side secured using hinges.
So far I've made the rim of the hood. This shows the corners held together with corner braces.
This shows the whole thing so far. The thin stripes of wood on the inside are for holding the hood on top of the tank.