I recently taught a two hour class on Scraperboard technique at Swan Art>>
We all worked up a piece from print outs of a sketch I had done.
The idea being to get the students to become familiar with the different tones and various marks and cross hatches available through this medium.
They all did very well on the night.
I have worked a little more on my one over the past few days.
Here it is along with the original drawing.
See full post here: Brian Gallagher2014-04-19.