Table of Contents
Advertisement
•
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 file 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 finished 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 finished part is different from the measurements of the CAD model, fine 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 "fine 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%
3D Systems, Inc.
56
Advertisement
Table of Contents
