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Manufacturing · head to head

Formlabs PreForm vs SolveSpace

Formlabs PreForm logo

Formlabs PreForm

Manufacturing

Free print preparation software that only drives Formlabs printers, because the money is in hardware and resin

From
Free
Rated
-
Full reviewWebsite
S

SolveSpace

CAD

Open source parametric CAD with a constraint solver in a few megabytes

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Formlabs PreForm preForm only drives Formlabs printers, so the free software is really an entry cost to a closed hardware and resin ecosystem rather than a tool you can keep if you change machines.; SolveSpace the in-house geometry kernel fails on complex boolean operations and fillets, and the failure is sometimes silent bad geometry rather than an error message, so models must be checked before export or manufacture.
  • They diverge on capability: Formlabs PreForm covers Automatic orientation, SolveSpace covers Constraint solver.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Formlabs PreForm and SolveSpace actually diverge.

Attributes where Formlabs PreForm and SolveSpace differ
AttributeFormlabs PreFormSolveSpace
Pricing modelFree with a Formlabs printerOpen source, no licence fee
PlatformsWindows, macOSWindows, macOS, Linux
CategoryManufacturingCAD

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Formlabs PreForm

  • Automatic orientation
  • Support generation
  • One-click print
  • Material presets
  • Dashboard
  • Fleet Control

Only in SolveSpace

  • Constraint solver
  • Solid modelling
  • Assemblies
  • Export formats
  • Cross-platform
  • Small footprint

What people use each for

The jobs each tool is most often brought in to do.

Formlabs PreForm

  • A dental laboratory preparing surgical guides on a validated resin and printer combinationnot SolveSpace
  • A prototyping team running several Form printers that needs job queueing and usage trackingnot SolveSpace
  • A jewellery workshop laying out castable patterns to maximise parts per buildnot SolveSpace
  • An education lab that needs software with no per-student licence costnot SolveSpace

SolveSpace

  • Designing 3D printed parts on a machine that cannot run mainstream CADnot Formlabs PreForm
  • Teaching constraint-based parametric modelling without buying licences for a classroomnot Formlabs PreForm
  • Checking that a mechanical linkage moves as intended before cutting metalnot Formlabs PreForm
  • Producing dimensionally accurate STEP or STL output from a small open source toolchainnot Formlabs PreForm

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Formlabs PreForm

  • PreForm only drives Formlabs printers, so the free software is really an entry cost to a closed hardware and resin ecosystem rather than a tool you can keep if you change machines.
  • Formlabs resin is sold in proprietary cartridges, and the ongoing consumable cost over a printer's life dwarfs anything a paid slicer would have charged.
  • Third-party resins can be used only through open material settings that step outside validated profiles, which affects print reliability and the comfort of warranty support.
  • Parameter-level control is deliberately limited compared with open slicers, so advanced users cannot tune exposure and layer behaviour the way they can on an open platform.
  • It is Windows and macOS only with no Linux build, which is awkward for research groups and labs standardised on Linux workstations.

SolveSpace

  • The in-house geometry kernel fails on complex boolean operations and fillets, and the failure is sometimes silent bad geometry rather than an error message, so models must be checked before export or manufacture.
  • There is no proper drawing and dimensioning workflow, so manufacturing documentation has to be produced in another application.
  • Development is volunteer-led and intermittent; long gaps between releases are normal and there is no support contract available at any price.
  • Assembly-level import of external CAD is very limited, so it does not fit a supply chain that exchanges native or assembly-level models with suppliers.
  • The interface follows its own conventions rather than mainstream CAD ones, so existing SolidWorks or Fusion users spend time unlearning habits for a tool with a lower ceiling.

Pricing, plan by plan

Formlabs PreForm

Free
  • PreFormFree
    • Free download with no licence fee or subscription
    • No installation or seat limit
    • Works only with Formlabs printers

SolveSpace

Free
  • SolveSpaceFree
    • Full application under the GPL
    • No seat limit
    • Windows, macOS and Linux builds

Which should you pick?

Choose Formlabs PreForm if

  • You need automatic orientation.
  • You want to start without paying.
  • You work on Windows, macOS.
  • You also want support generation.
Formlabs PreForm review

Choose SolveSpace if

  • You need constraint solver.
  • You want to start without paying.
  • You work on Windows, macOS, Linux.
  • You also want solid modelling.
SolveSpace review

Questions people ask

Is Formlabs PreForm or SolveSpace better?
Neither clearly leads. Formlabs PreForm starts at Free and SolveSpace at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Formlabs PreForm or SolveSpace?
Formlabs PreForm starts at Free and SolveSpace at Free.
Does Formlabs PreForm or SolveSpace run on more platforms?
Formlabs PreForm runs on Windows, macOS. SolveSpace runs on Windows, macOS, Linux.
Can I use Formlabs PreForm for free?
Both have a free tier, so you can try either at no cost before committing.
What is Formlabs PreForm best used for?
Formlabs PreForm is most often used for a dental laboratory preparing surgical guides on a validated resin and printer combination, a prototyping team running several form printers that needs job queueing and usage tracking, a jewellery workshop laying out castable patterns to maximise parts per build, an education lab that needs software with no per-student licence cost. Of those, a dental laboratory preparing surgical guides on a validated resin and printer combination and a prototyping team running several form printers that needs job queueing and usage tracking are not what SolveSpace is typically brought in for.
What can Formlabs PreForm do that SolveSpace cannot?
Formlabs PreForm covers Automatic orientation, Support generation, One-click print, Material presets. SolveSpace covers Constraint solver, Solid modelling, Assemblies, Export formats.

Answered from the vendors’ own pages

Formlabs PreForm: Is PreForm free?

Yes, with no licence fee, subscription or installation limit. It is free because it only prepares jobs for Formlabs printers.

SolveSpace: Is it really free for commercial work?

Yes. It is released under the GPL with no licence fee and no seat limit. Support is community only.

Formlabs PreForm: Can PreForm drive a non-Formlabs printer?

No, and it never will. It is the front end for Formlabs hardware, which is where the revenue is.

SolveSpace: Can it replace Fusion 360 or SolidWorks?

No. It handles parts and simple assemblies well. Complex geometry, drawings and supply chain interoperability are outside its range.

Formlabs PreForm: Can I use third-party resin?

Only via open material settings, which take you outside validated profiles and the reliability those profiles are tuned for.

SolveSpace: What hardware does it need?

Very little. It runs on old laptops and small Linux machines where mainstream CAD will not start.

Formlabs PreForm: Does it run on Linux?

No. Builds are provided for Windows and macOS only.

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