3D Systems, Inc.
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• Within the Options panel, enter shrink compensation values for X or Y. Z compensation is rarely necessary (see table
above for the values).*
Identify the exact X and Y dimensions of the part using a CAD program.
• Most CAD programs and simple stl le viewers will provide a way to view a part with its dimensions.
• Make note of the actual X and Y dimensions as XCAD and YCAD.
Build and clean the part and take measurements of the nished part.
• It is recommended to measure along the critical dimensions of the geometry, take measurements in multiple areas and take an
average of the values.
• Measurements can be made using calipers or more advanced metrology methods.
• Make note of the X and Y dimensions of the printed part and mark them as XPART and YPART
NOTE: If the measurement of the nished part is different from the measurements of the CAD model, ne tune the
accuracy using scaling factors.
Determine “Scaling Factor” to use for the next build
• Use the following formula calculate the scaling percentage to be used on the “ne tuning” build:
X Scaling Factor = (XCAD - XPART)/ XCAD * 100 (answer will be as a percentage)
Y Scaling Factor = (YCAD - YPART)/ YCAD * 100 (answer will be as a percentage)
EXAMPLE:
X measurement of CAD model = 3.000”
Y measurement of CAD model = 5.000”
X measurement of printed part = 2.998”
Y measurement of printed part = 4.989”
X Scaling Factor = (3.000 – 2.998)/3.000 *100 = 0.067%
Y Scaling Factor = (5.000 – 4.989)/5.000 * 100 = 0.22%
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