Solutions For Unwanted Material Layer Lines On Parts - Stratasys Origin One User Manual

Finding a Remedy

Solutions for Unwanted Material Layer Lines on Parts

Issue: Printed parts exhibit unwanted material layer lines.
Possible root causes: Improper tray seal, deformed teflon membrane, layer shifts due to
build head movement, changing print settings or pausing mid print, teflon and interface
glass cleanliness, or solid or cured residue in tray.
1. Improper tray seal.
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2. Deformed Teflon membrane.
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3. Layer shifts due to unwanted build head movement.
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4. Changing print settings or pausing the system mid-print.
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5. Teflon and interface glass cleanliness.
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The tray must be properly sealed for a successful build job. A good tray seal prevents
resin from leaking into the printer. This also ensures the teflon membrane is laminated
flat against the interface glass during printing. If the teflon membrane does not laminate
flat against the interface glass, unwanted material layer lines on the part may occur due
to a deformed layer.
Solution: Ensure the tray seals correctly by using the procedure described in
and Installing a Tray Into the Printer" (page
the corrective steps to ensure a good seal.
The teflon membrane is a consumable part. After repeated printing, it will show signs of
deformation. Like the improper tray seal issue discussed above, a deformed teflon
membrane can cause unwanted material layer lines on the part due to a deformed
layer.
Solution: Disassemble the tray, clean the tray and gaskets, and replace the teflon
membrane according to the procedure described in
The build head and build arm must remain as rigid as possible during a print. If the
build head or build arm moves during print, layer shifts on the part will result. This
typically occurs due to improper build head installation or calibration.
Solution: Confirm the build head is properly installed by attempting to move it manually.
If it can be moved, confirm the thumbscrew as well as the three calibration block
screws are properly tightened.
Changing print settings or pausing a build will result in unwanted material layer lines.
Solution: Avoid pausing build jobs unless absolutely necessary. Currently, there are
three defined build job regions in the material settings: First layer, Burn-in region, and
Model region. As such, there will always be at least two material layer lines per part. A
csv override in the transition regions can mitigate the prominence of the layer lines.
Clean teflon and interface glass is critical to printer performance. Performing a print on
a dirty interface glass or with a dirty sheet of teflon (bottom surface) can cause the
teflon to stick to the interface glass and not delaminate completely. This can result in
the layer becoming deformed.
Solution: Inspect the interface glass and the teflon membrane. If dirty, clean them using
the procedure described in
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Troubleshooting Issues and Solutions
35). If the tray does not seal properly, take
"Cleaning the Mid Plate Glass Window" (page
"Replacing Tray Sheets" (page
"Filling
56).
51).
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