Persons, who plan a house and/or a dwelling, must attain an architect to assign, who makes them a 3-D-Grundriss at the PC around an impression from the later sketch to, only, which is connected to much time with costs and stressed. The sketch generator is to make it, sketches on simple and economical kind, accessibly for 1 : 1 possible in the Originalgr??e of making persons available. By bar (1) computer-controlled on the 2 different axles (X, Y) each distance to take to each other to be able and inside the bars roles (of 2) with textile strip (3) attached, those are completely (up to the ground), partial or not at all to be unrolled to be able, can represent one walls, doors and windows of a sketch and make accessibly persons available. Necessary are only a few inputs in a program, which aligns the bars, which can have the person entered and/or from an advisor. The sketch generator is suitable for each sketch, even deviations from pulse flatness can be illustrated.