Rapid Prototyping Design Guidelines

The following guidelines are recommended:
Since parts are formed by extrusion onto successive layers, surfaces with empty space below require special processing. For example, a part the shape of a drinking glass is fine but if your turn the glass up-side down it becomes more difficult.
Since the extrusion is .010", it is best to keep dimensions in multiples of this value - especially smaller dimensions (including material, air, diameters, etc.)

Tolerance:
- X, Y: .005" + 0.1%
- Z: .010 + 0.1%
Min wall:
- .030" for horizontal walls (e.g. bottom of box)
- .040" for vertical walls with no holes or cutouts
- .1" for vertical walls with holes and slots in sides
- .020" for very low walls that form letters/logos

Min acute angle: 30 deg.
Min diameter of holes in side of part: 0.25".
Min height of horizontal slots in side of part: 0.25".
Min material between hole and edge or between holes: .04" ideally,
.02" absolute min and can create problems.
Max size: 8" x 8" x 12"
Long thin objects (max dim / min dim > 10) can't be longer than 8"

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