1.8 to 2mm hollow braid is fine.Agouti's long net twine. http://www.agouti-nets.co.uk/product/42-500g-brown-long-net-twine
Most people use a 21/8" mesh board that gives you 41/4" mesh size.
With the selvedge half meshes it should hang about 60 inches that would be 13 meshes + 2 half selvedge meshes = 14 meshes deep.
TC
I am new to net making just won't to give it a shot and that just confused me more like what is the actual thick ness of the net string its self and how big are the holes in the net it's self
Cheers matt