Today several students began to practice using the scratch knives on the scratchboard. It isn't as easy as it seems. The students need to get a feel for the amount of pressure that must be applied to the knife. Too much and the white paper will get scratched up and not enough pressure ends up leaving no mark at all. I strongly recommend the students practice first and test each tool prior to using it on their final piece of artwork.
scratch knife - tool used to create scratch marks on a scratchboard.
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