Updated 2026-10-14
To convert SLDASM to Parasolid, drop the .sldasm into the converter below and download an .x_t of the assembly. Before you start, know the catch: an assembly file references its parts rather than containing them, so one sent on its own often has no geometry to convert. If that happens, ask the sender for a STEP or Parasolid export of the whole assembly, which takes them a minute. Assemblies of up to 5 parts need no account.
2 solid-geometry conversions a day with no account. No card, no install, no CAD licence.
On our servers. No account: deleted within 24 hours. Signed in: kept until you delete them. Never shared or used for training.
A closed Parasolid solid that Fusion 360, Inventor, Onshape, SOLIDWORKS, Creo and FreeCAD open directly and a machine shop can quote from. Radii measure and faces mate like modelled geometry. Where those surfaces cannot be read, or cannot be written out exactly, they are rebuilt from the display geometry, and failing that the body is faceted; every conversion says which of the three.
No feature history: you get the finished shape, not the steps that built it.
A SLDASM is a document about arrangement: which parts belong, where each sits and how the mates constrain them. The shapes themselves usually live in the separate .sldprt files it points to. A Parasolid .x_t, by contrast, holds geometry only.
So the conversion keeps the shape and leaves the structure behind. Components come out where the assembly placed them, but the mates, the feature trees of the parts, configurations and properties do not travel. Neither format can carry them into the other. The components usually arrive on their own surfaces; where those cannot be read or written out exactly they are rebuilt from the display geometry, or faceted, and the conversion says which of the three it gave you.
When the assembly arrived on its own and the converter finds no geometry in it, it says so instead of handing back an empty file, and the attempt does not count against your free conversions. The fix is on the sender's side, and it is quick: in SOLIDWORKS, open the assembly and Save As Parasolid or STEP. If they want to keep the native files, Pack and Go gathers the assembly and every part into one folder.
A SLDASM file is a SOLIDWORKS assembly: parts positioned by the mates that constrain them. Sent with its SLDPRT files, the whole product converts as one and component names are kept. An assembly that stores its components’ shapes converts on its own too, every component placed where it sits — as a mesh, or as a solid whose surfaces are rebuilt from those stored shapes.
Someone sent you a whole product and you need it in a neutral format your CAD system, renderer or printer takes.
Parasolid is the modelling kernel under SOLIDWORKS, Solid Edge and NX, and a transmit file is its exact solid geometry. Between systems that share the kernel it often survives better than a neutral format. .x_t is text, .x_b is binary; both hold the same solid.
Someone in a Siemens or SOLIDWORKS shop sent you an .x_t and nothing you have opens it.
Keep the part open: fill it with a lattice, check it with FEA, texture a surface, or slice it into cut-ready sheets. These workspaces are in early access — create an account, then apply from inside the app.
SOLIDWORKS® is a registered trademark of Dassault Systèmes SolidWorks Corp. MeshWeave is an independent tool and is not affiliated with, endorsed by, or sponsored by Dassault Systèmes. Parasolid® is a registered trademark of Siemens. MeshWeave is an independent tool and is not affiliated with, endorsed by, or sponsored by Siemens.