Drawing Problems - Chapter 4 Copyright Goodheart-Willcox Co., Inc. 114 AutoCAD and Its Applications—Advanced 20. General This is a concept sketch of a pencil holder. Create a solid model using the dimensions given. Create and save new UCSs as needed. Do not add dimensions to the drawing. Plot your drawing on a B-size sheet of paper in a visual style speci- fied by your instructor. Save the drawing as P4-20. 21. Mechanical This is an engineering sketch of a window blind mounting bracket. Create a solid model using the dimensions given. Create and save new UCSs as needed. Do not add dimensions to the drawing. Create two plots, each of a different view, on B-size paper in the visual styles specified by your instructor. Save the drawing as P4-21.