3D printing ready
STL is the universal input for slicers and FDM/SLA printers.

Convert Siemens NX (.prt) into STL for 3D printing, slicing and rapid prototyping. Done online in WO3D — no NX license required.
STL is the universal input for slicers and FDM/SLA printers.
Take an NX part straight to a print without desktop CAD.
No Siemens NX needed — upload your .prt in the browser.
When you want to 3D print an NX part, STL is the format almost every slicer expects.
For engineering exchange use STEP; STL is purely a watertight mesh for manufacturing and printing.
STL approximates curved surfaces with triangles, so finer tessellation means smoother prints.
STL carries no color, units metadata or assembly structure — just geometry.
STL is not editable CAD; keep your NX file or a STEP export for design changes.
Use STL only at the manufacturing/printing stage.