This article summarizes the changes for each version of the PreForm Insider Program, our early-access program that lets you see PreForm's latest features, experimental workflows, and cutting-edge algorithms before they hit the mainstream.

For information about public PreForm releases, see PreForm downloads and release notes.

The latest PreForm version can always be downloaded from the PreForm Insider Program download page.

PreForm Insider 3.61.0 build 586 — June 10, 2026

• New features:
• Fuse X1 support: PreForm now supports the Fuse X1 SLS printer.
• Flexible 80A Resin V2: The new Flexible 80A Resin V2 is now available in PreForm for Form 4 and Form 4L generation printers.
• Improvements:
• Elastic 50A is now Flexible 50A: Elastic 50A Resin V2 has been renamed to Flexible 50A Resin. The formulation is unchanged—only the name is new. PreForm shows a one-time notification explaining the change.
• Print settings updates:
• New Default V1.0 print settings for Flexible 80A Resin V2 at 100 microns on Form 4 and Form 4L generation printers.

PreForm Insider 3.61.0 build 551 — June 2, 2026

• Improvements:
• Realistic View: Added support for the following resins:
• Precision Model Resin V1
• Tough 1000 Resin V1
• Nylon 11 Powder V1
• Nylon 12 Tough Powder V1
• Nylon 12 GF Powder V1
• Separate Bodies refinement: The Separate Bodies context menu option (formerly "Split Bodies", introduced in 3.59.0) is now disabled when right-clicking a single-body model, making it clear that the feature only applies to multi-body parts.
• Z-Bleed Compensation control in Print Settings Editor: The Z-Bleed Compensation parameter in the Print Settings Editor has been redesigned for clarity. Instead of entering an offset in layer counts, you now enter the maximum compensation amount directly in millimeters, and can adjust it in increments matching the layer height.
• Print settings updates:
• Support presets removed: The support presets dropdown has been removed from the support flyout for Form 4 and Form 4L generation printers. Users who relied on a specific preset can download them at this page.

PreForm Insider 3.60.0 build 510 — May 22, 2026

• New features:
• Auto-recovery: Following an unexpected shutdown, you have the option to recover lost progress from automatically-saved local backups.
• Realistic View: The view toggle in the top-right of the 3D scene switches between the standard view and a realistic view where parts are shown as they will actually be printed. See material color, touchpoints, layer lines, and textures with true-to-life accuracy. Currently supported materials:

• Improvements:
• Save full projects: Projects with multiple builds can now be saved as a single .form file. Use the File menu or keyboard shortcuts to save and load .form files normally without needing to save each build separately.
• Note: New .form files will not be backward compatible to previous versions of PreForm.
• Early Layer Merge parameter added to Print Settings Editor (SLA): Scene-wide early layer merge can be adjusted in the Print Settings Editor, providing control over build plate adhesion.
• Separate Bodies (renamed from "Part Splitting"): The multi-body splitting feature shipped in 3.59.0 has been renamed throughout the UI from "Part Splitting" / "Split Bodies" to Separate Bodies for consistency. Behavior is unchanged: right-click a multi-body model and select Separate Bodies to break it into individual models grouped in the model list.
• Confirmation before deleting a build volume: Deleting a build volume now prompts for confirmation before deletion. This prevents accidental loss of work, as the undo/redo stack is currently per-build, not cross-build.
• Bug fixes:
• Fixed issue where turning on variable Z-scaling disabled XY correction factors.
• Fixed issue where some hotkeys were disabled on Windows machines.
• Fixed issue where imported 3MF files had incorrect positions.
• Fixed issue where selecting a model triggered printability and print time recalculations. Selecting a model without modifying it no longer initiates printability checks or print time estimations. Selection is now faster on large scenes.

PreForm Insider 3.59.0 build 446 — May 6, 2026

• Improvements:
• Multi-printer capability across multiple build volumes

PreForm Insider 3.58.0 build 405 — April 28, 2026

• New features:
• Part Splitting
• SLS variable Z-scaling
• Improvements:
• Multi-material capability across multiple build volumes

PreForm Insider 3.58.0 build 326 — April 1, 2026

• New features:
• Multiple build volumes in one window in PreForm
• Optionally move parts outside of the build volume