The International STa"M Forum

A customer wants to know if there is a need to put the dust particles that fall off new retzuos into shaimos?

I know some of us dabble in using our Safrus skills to do calligraphy (i.e. a nice aishes chayil or birchas habayis suitable for framing etc.) in fact, or-lasofer has a whole line of "kifulim" for judaica.
Two questions for those that do non-stam calligraphy:
1. What is the halacha of using Ksav Ashuri? I am interested in the marei makomos too.
2. What materials do you use, i.e. paper, pens etc?
Thanks as always.