for papercraft, just use 40k scale papercraft nets and reduce them in size. For smaller vehicles this won't work, but basic hulls should be fine.
There is a lot of interest in epic scratch building. The small size is an asset, not a detriment.
For epic scratch building nets tend not to be used for most things (except really big stuff), as at epic scale you can get to sizes quickly just by layering card or plastic. There was a blog post with some nice cardboard leman russ made that way, but I forget the link …
Lextar on taccom is worth looking at for plasticard scratch-building at the moment.
http://www.taccmd.tacticalwargames.net/ ... =7&t=30201Plasticard/plastic sheet doesn't need to be expensive. you can cut panels from the lids of food tubs, use old plastic cards (phone card etc), just check it can be blued with polycement. Sprue is pretty useful as a building material as well. I did pretty much all my early plasticard builds using the lids from ice cream tubs combined with cheap 1mm vacuum forming plastic sheeting.