Invalid Shapes

The shapes you draw in eMachineShop must be closed. The letters of the alphabet and digits can be used to illustrate:

These are simple closed shapes:

D O 0

These are fully open shapes:

C E G H T U

These are partly closed and partly open:

A P Q 4

The B and 8 are fully closed but may or may not be allowable depending on how they are drawn. If the straight vertical line of the B is drawn as one single line, it is not considered a closed shape in eMachineShop CAD. Similarly if the 8 is drawn as a "figure eight" where lines cross in the middle it is not considered a closed shape. The B must be drawn with two small D shapes and the 8 with two small circles or two small drop shapes.

B 8

The eMachineShop CAD will inform you if you have an invalid shape.

Examples

In the examples below only the first shape is valid. All the others are not valid and will lead to errors. Those marked "T" have T intersections.

Often these types of problems occur at a very small scale and you will need to zoom into the problem area to see the defect, or the software will zoom in automatically to show you the problem. Regardless, you need to correct such defects to be able to proceed with your design.