Thin metal edging for ply box

[drillbit]

Anyone know where I can buy some cheap metal edging strips to nail on the edges of a ply box?

This is the sort of thing I am after. There are various places which sell aluminium case edging, like for musician's flight cases..but they are much thicker than I need, and much more expensive than I want to pay..

 

[jasonB]

You could try plasterboard angle bead. would be similar to tea crate edging maybe a touch thicker.

J