If a potential investor or client received a letter from a prospective business with sloppy typos or incorrect formatting or, indeed, no attention to detail, that business is going to plummet in their estimation. Most businessmen and women are mindful of this and do what they can to impress. It's easy to score points on appearance, so why some business overlook it as a crucial confidence-inspiring area is difficult to comprehend.
Both image formats can produce excellent stamps; however simple images are always best in .eps and .wmf format to allow you to easily manipulate line thickness in the event the lines are too thin.
The easiest stamp to make from a manufacturing point of view is one where the artwork has a line thickness that does not fall below the minimum required. The minimum line thickness that is recommended is 0.2mm (0.00787 inch or 0.57 point), if it does fall below this, the 'wall strength' of that part of the stamp is compromised and may become distorted. Having said this, you can convert an image with fine lines to one suitable for stamp making.