[Ria P]

I've sold or given away all my bin cages ages ago because i changed over to Hamster Heavens for the dwarfs and Alaskas for the Syrians.
There are some bin cages on the "Let's see your cages" thread.

Here's a transport box which is the same principle.

a) cut the mesh to the required size with a wire cutter
b) place on the lid and mark the drill holes with a permanent marker
c) draw on the square you want to cut out
d) drill the holes with an electric drill
e) follow the drawn on lines and cut out the square. I use a Dremel power tool with a cutting disc for plastic but disc for metal does the job too
f) smooth the edges with sandpaper
g) add decorative duck tape if you like and cut edges with stanley knife
h) place mesh on top of the lid and attach with cable ties
i) snip off excess with wire cutter