bend-bend

bend-bend fatigue

3D drawing of drawing dies

Line drawing and boundary drawing

cold-drawing mill problem

08AL deep-drawing steel plate

2D drawing

2D drawing output

2D engineering drawing

2-D engineering drawing

2D line drawing

2D part drawing

3D drawing

3D engineering drawing

3D perspective drawing

3-Drawing

75 t cold-drawing machine

A drawing-block with attributess

a method of thinking and drawing in converse order