Thanks guys, looking forward to finish my project. One more class this year, a private one from Swiss. After that I have a bit time to finish some paintings and my DvD until he 2nd week of January and than we are gone again for several months. These reactions really encourage me to finish the DvD and start the next...
Hab, that would be a round scalpel without the holder. Round, so I don't damage the surface, but just scrape off some layers of paint. I work with transparents, so under every layer is another color. I can scrape back until the white of the board if needed. Without a holder because I have more control this way.