A novice CAD draftsman, how to draw a profile of a cabinet?

For example, you need to draw the cross section of a square box, but if you don't know whether the box is made of stainless steel or wood, how thick the side plates of the box are, whether there are any columns around it, how many layers there are in the box, what material the partition is, etc., you can't draw the cross section of the box.

Therefore, if you want to draw a profile of a hotel front desk cabinet, you should do two things well: 1, and fully understand the external and internal structure of the wine cabinet, as well as the manufacturing process, otherwise the drawn structure will not be made or the cost will be too high, then the drawing will be a failure; 2. The contour marks of various materials shall comply with the relevant provisions of national standards.

This drawing is not the responsibility of the draftsman, but belongs to the design. By the way: in the past, after manual drawing, the draftsman needed to draw the manual drawing into a base map for drying the blueprint. Now all drawings are made by computer and can be printed directly, so there is no such thing as a draftsman.