I too am a DIY kind of guy and refuse to pay big money (for me) for something that I am perfectly capable of building on my own!

I uses stainless steel – usually purchased here http://www.bwire.com

I have been using a 4×4 wire mesh – but I am thinking about getting down to a 2 x 2 mesh – this will give the material more strength for structure. I just put a cut sheet (aviation snips used to cut) and fasten it inside a stainless frame and baM! all set.

I will post photos later, but this ends up looking a lot like what you have all posted here.

Also – GOOD POINT on not using galvanized – that coating is super toxic.