A `.XMT_BIN` file usually refers to a Parasolid binary transmit object containing solid and surface geometry directly from the Parasolid kernel, enabling cleaner transfers between Parasolid-based CAD systems by packaging the true model definition into a compact binary exchange file that can’t be understood in a text editor.

In common CAD workflows, Parasolid transmit data is packaged in two extension sets—text forms like `.x_t` or `.xmt_txt` and binary forms like `.x_b` or `.xmt_bin`—where `.x_b` is now standard but `.xmt_bin` still appears, and to open it you import into a Parasolid-supporting CAD/CAE tool; if that tool lists just `.x_b`, renaming `. Here’s more information about best app to open XMT_BIN files stop by our web site. xmt_bin` to `.x_b` usually lets it load successfully because both extensions point to the same binary Parasolid format.

With an `.xmt_bin` file, your primary workflow is leveraging its Parasolid solid/surface geometry by importing it into CAD for part review, measurement, drawing generation, or additional feature work in programs like Siemens NX, and likewise loading it into CAE environments such as other engineering simulators for meshing and running analyses.

If you’re sending the model to someone whose software handles Parasolid poorly, the fix is converting to formats like STEP AP242 for solid fidelity or IGES for surface workflows, or to mesh types like standard mesh exports for printing/visualization while accepting the loss of analytic CAD surfaces; you can also heal or stitch geometry in the receiving tool before exporting again, and using an `.xmt_bin` export is a common troubleshooting step to see whether problems originate from your native CAD model or appear only during file translation.

The two main ways to open an `.xmt_bin` are using your CAD/CAE tool’s Parasolid import or renaming the file when the dialog filters extensions, with the import path selecting Parasolid from the file type options so the solid/surface model loads as intended, and the rename method changing `.xmt_bin` to `.x_b` so the software recognizes it as the same underlying Parasolid binary format.