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Mesh++ by Polyprod
Add-in for Autodesk Fusion · Windows

The missing mesh toolkit for Autodesk Fusion.

Buy Mesh++ for 49 € See all features
One-time payment, lifetime licence All updates included Native Fusion bodies in your timeline
Autodesk Fusion — Mesh++ add-in
SolidSurfaceMeshMesh++
Repair
Convert
Sketch
Create
Modify
Loading 3D preview…
Before — your STLTriangle mesh
After — Mesh++ B-RepSolid body, made in Fusion
Drag the handle to compare · drag the model to turn it
Mesh to B-RepOrganic or mechanical
A full toolboxRepair, sketch, split, pack and more
100% localYour files never leave your computer
Mesh to B-Rep

Convert any mesh to a solid.

Stanford Bunny scan before, and the smooth B-Rep solid made by Mesh++ Organic after, in Autodesk Fusion

Organic: mesh to T-Spline solid

Scans, sculpts and freeform shapes become smooth solids you can edit.

  • Sharp edges kept
  • Detail level you choose
  • Solid or surface
STL of a machined part before, and the closed B-Rep solid rebuilt by Mesh++ Mechanical after, in Autodesk Fusion

Mechanical: STL to parametric CAD

CAD parts come back as real planes, holes and fillets you can edit.

  • Extrusions, holes, pockets, fillets
  • Native, editable Fusion features
  • Any shape as one clean solid Beta
The whole toolbox

Much more than conversion.

Repair Mesh

Close holes and fix broken triangles.

Sketch on Mesh

Draw splines and polylines right on the mesh.

Detect Edges

Trace sharp edges as exact lines, arcs and circles.

Extrude Spline to Mesh

Sweep a curve into a ribbon or a profile.

Split Mesh

Cut a mesh into pieces, like Split Body.

Pack Meshes

Fill your 3D printer build volume in one click.
Scanned mesh with holes, then closed and valid after Mesh++ Repair Mesh in Autodesk Fusion
Repair

Repair Mesh

Close holes and fix broken triangles before you convert or print.

  • Holes and flipped triangles fixed
  • Original mesh kept
Splines drawn on a mesh with Mesh++ Sketch on Mesh, and exact edges found by Detect Edges on a machined part, in Autodesk Fusion
Sketch › Sketch on Mesh

Sketch on Mesh & Detect Edges

Draw curves that follow the surface, or let Detect Edges trace the sharp edges for you.

  • Splines and polylines on the mesh
  • Exact lines, arcs and circles
Ribbon mesh extruded from a curve on a mesh with Mesh++ in Autodesk Fusion
Create › Extrude Spline to Mesh

Extrude Spline to Mesh

Sweep a curve into a ribbon, rectangle or ellipse, straight or normal to the mesh.

  • Fusion's distance and angle handles
  • Ready to cut with Split Mesh
Mesh split into coloured pieces with Mesh++ Split Mesh in Autodesk Fusion
Modify › Split Mesh

Split Mesh

Cut a mesh with other meshes, the way Split Body works.

  • Pieces that fit together exactly
  • Closed or open pieces
Parts packed in a 3D printer build volume with Mesh++ Pack Meshes in Autodesk Fusion
Modify › Pack Meshes

Pack Meshes

Fit as many parts as possible in your printer, with meshes, solids and surfaces.

  • 1,000+ printer presets: FDM, resin, SLS, MJF
  • Density chart by height
How it works

How to convert an STL to a solid in Fusion.

Insert your mesh

STL, OBJ or 3MF, with Insert Mesh as usual.

Pick a conversion

Open the Mesh++ tab and choose Organic or Mechanical.

Keep designing

The solid lands in your timeline as native Fusion geometry.

Use cases

Made for scans, prints and reverse engineering.

3D scanning

Turn a scan into a smooth solid you can measure and cut.

Organic

Reverse engineering

Rebuild a part from its STL and edit it like any Fusion design.

Mechanical

3D printing

Repair, split and pack your parts for printing.

Repair · Split · Pack

Sculpts & characters

Bring ZBrush or Blender sculpts into Fusion as solids.

Organic
Pricing

Every tool. One small price.

Pay once, keep Mesh++ forever. No subscription.

Organic conversion Mechanical conversion Repair Mesh Sketch on Mesh Detect Edges Extrude Spline to Mesh Split Mesh Pack Meshes

All included in every licence.

Best value

Personal

49 €once, yours forever

For makers, hobby projects and personal prints.

  • Every Mesh++ tool
  • Organic and Mechanical mesh-to-B-Rep
  • Lifetime licence, no subscription
  • All updates included
  • Personal, non-commercial use
Buy Mesh++ for 49 €

Commercial

199 €once

For businesses, freelancers and any paid work.

  • Everything in Personal
  • Commercial use
  • Email support
Buy Commercial

Already a Polyprod customer?

Your Polyprod Pro licence works with Mesh++ as it is. Sign in to see your licences.

My account

Download Mesh++ from your account right after payment. Prices in euros, VAT included, secure payment by Stripe. Several licences? Contact us.

FAQ

Frequently asked questions

How do I convert an STL to a solid in Autodesk Fusion?

Insert the STL with Insert Mesh, open the Mesh++ tab and run Mesh to Brep: Organic for scans and sculpts (a smooth T-Spline solid), Mechanical for parts designed in CAD (planes, cylinders, holes and fillets as native features). The solid lands in your timeline and the mesh is kept.

What do I need to run Mesh++?

Autodesk Fusion (formerly Fusion 360) on Windows 10 or 11, 64-bit. The conversion engine is bundled with the add-in: there is nothing else to install. The beta clean CAD reconstruction also uses a local Python with NumPy and SciPy. Mesh++ is not available on macOS.

Which meshes can I convert?

Any mesh body in Fusion: STL, OBJ or 3MF files inserted with Insert Mesh, from 3D scanners, photogrammetry, sculpting tools or CAD exports. Closed meshes give solids; open meshes give surfaces with Organic.

When should I use Organic or Mechanical?

Use Organic for scans, sculpts and freeform shapes: it gives a smooth T-Spline body. Use Mechanical for parts that were designed in CAD: it rebuilds planes, cylinders, holes, pockets and fillets as native Fusion features.

Does the mechanical conversion work on any part?

Feature recognition covers the common CAD families: extrusions, revolutions, holes and counterbores, pockets and constant fillets. The clean CAD reconstruction handles other shapes and is still in beta.

How do I get Mesh++ after buying?

Right after payment, sign in to your account: the Mesh++ download and the installation steps are there. Unzip the folder, add it in Fusion from Utilities > Scripts and Add-Ins, and click Run. Your downloads stay available in your account.

Can I use Mesh++ on several computers?

A licence is used on one computer at a time. Sign out of Mesh++ to move it to another computer, or release it from your account if the first one is no longer available. You can change computer once a day; buy one licence per simultaneous user.

Does Mesh++ work offline?

Mesh++ checks your licence online when Fusion starts, which Fusion does anyway. If your computer is offline, Mesh++ keeps working for up to 6 days after the last successful check.

Is Mesh++ a subscription?

No. You pay once, keep your licence for life and get every Mesh++ update: 49 € for personal use, 199 € for commercial use.

Personal or Commercial: which licence do I need?

The Personal licence is for non-commercial use: hobby projects, learning and personal prints. As soon as Mesh++ is used for a business or for paid work, choose the Commercial licence.

Does my Polyprod licence work with Mesh++?

Yes. A Polyprod Pro licence also unlocks Mesh++.

Are my files sent anywhere?

No. All the computation runs on your computer with the bundled engine. Your models are never uploaded.

Your next STL deserves a real solid.

Get Mesh++ for Autodesk Fusion with a lifetime licence, from 49 €.

Buy Mesh++ for 49 € Ask a question