just smoke so much that it closes down to a little hole.......... then just poke it out.
my friend used to call them NETS....lol

i need a net for my bowl......... im like, did you drop it in a lake?

3 sheets..... go into any bathroom and pull them from the sink... just unscrew it and pull the screen out. go to the HOMEDEPOT and go to plumbing and get steel screens