Plastic

[gizz]

Indeed but probably too heavy to use for larger pieces

[razerdave]

I used to use 4 and 6mm polycarb for my ants' side panels. On Baby hell (6mm) they were only 14mm high and about 80mm long, so they were fairly light. I had to change to 6mm HDPE to get 4WD into the weight as well as the axe.

[harry hills]

i can fit 12mm in the weight