Sometimes these low-end programs can produce rudimentary drawings that look like the original image, and these can be useful. However, if the drawing is scaled up then all the little jagged lines appear as large jagged lines and may no longer be useful. These entity intensive drawings can also prove difficult for CNC programs to handle. Drawings created with CAD programs are built in a specific manner, specific to particular applications and individual designers. For example, in a three-view mechanical drawing the views are drawn first then dimensions and notations are added.
All lines are complete and without gaps, and all arcs are of specific radiuses.
CAD programs have editors that can easily edit these drawings. Good raster to vector programs try to remove speckles, jump gaps in the image, snap certain lines horizontal or vertical, determine line thickness, connect continuous and closed objects and handle numerous other situations. The order of these entities is not necessarily in a logical CAD order. Some CAD programs can be awkward when editing these drawings. Our stand-alone vector editing features are built so that the converted drawings can be quickly edited, lines joined, arcs straightened, points added or removed, etc.