Printing | 27
5 Printing
5.1 Operational environment
The operating temperature for the Form 3BL is 18–28 °C (64–82 °F), with low ambient humidity.
For optimal printing, do not exceed this range.
5.2 Designing for SLA
A successful 3D print starts with a well-designed model. Follow these best practices to optimize
designs and reduce print failures. For detailed guidance and visual assistance, visit support.
formlabs.com.
5.2.1 Printing specifications
Parameter Unit
Build volume (W × D × H) 33.5 × 20 × 30 cm
13.2 × 7.9 × 11.8 in
Layer thickness 25–300 microns
0.001–0.012 in
5.2.2 Feature design guidelines
Feature type Recommended value
Minimum supported wall thickness 0.2 mm (0.008 in)
Minimum unsupported wall thickness 0.2 mm (0.008 in)
Maximum unsupported overhang length 5.0 mm (0.2 in)
Minimum unsupported overhang angle 10° from level
Maximum horizontal support span length 29 mm (1.14 in)
Minimum vertical-wire diameter For a 7 mm-tall (0.3 in) wire: 0.2 mm (0.008 in) diameter
For a 30 mm-tall (1.2 in) wire: 1.5 mm (0.06 in)
Minimum embossed detail 0.1 mm (0.004 in)
Minimum engraved detail 0.15 mm (0.006 in)
Minimum clearance 0.5 mm (0.02 in)
Minimum hole diameter 0.5 mm (0.02 in)
Minimum drain hole diameter 2.5 mm (0.1 in)
5.3 Setting up a print
Form 3BL print jobs can be set up using PreForm, Formlabs’ print preparation software. To
start, open OBJ or STL files in PreForm, orient and layout multiple models into a complete
build, then upload the print job to the printer. For detailed guidance and visual assistance,
visit support.formlabs.com.
5.3.1 Downloading or updating PreForm
Visit the PreForm product webpage to download the latest version: formlabs.com/software.
Learn how to use PreForm from the tutorials available in the software. Click Help > Show
Onboarding Tutorial from PreForm’s menu bar.
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