Thanks very much.
I got the "PVC DWV Sewer & Drain Adapters " idea from someone else:
Those make it super-easy.
http://davesgarden.com/communi...
Yet another person gave me the idea to use embroidery hoops with window screening. As long as the seeds are bigger than 1/24 th inch, that is great for removing dust and tiny chaff.
And fabric shops have many kinds of cheap mesh "fabric" like 8-per-inch black nylon mesh. That is MUCH cheaper than stainless steel wire cloth!
For me, the frustrating part is when I break up flower-heads TOO MUCH, and get lots of chaff that is the
same size as my seeds.
So now I try to shake the seeds out gently at first. If I get "enough seeds" that way, I stop and have very clean seed with little effort. But if I want more seed, I have to break up the flower-heads, and then separate seeds from chaff and dust.