Do I need CATIA to make an STL?

No. Upload your .CATPart or .CATProduct file and convert to STL online — no Dassault license required.

Is the STL watertight for printing?

The converter tessellates solids into a closed mesh suitable for slicing; always preview before printing.

STL is a mesh, not parametric CAD. Keep the CATIA file or a STEP export for further edits.

CATIA to STL中文

Convert CATIA (.CATPart / .CATProduct) into STL for 3D printing, slicing and rapid prototyping. Done online in WO3D — no CATIA license required.

STL is the universal input for slicers and FDM/SLA printers.

Take a CATIA part straight to a print without desktop CAD.

No Dassault software needed — upload CATPart / CATProduct in the browser.

When you want to 3D print a CATIA 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 CATIA 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 CATPart or a STEP export for design changes.

Use STL only at the manufacturing/printing stage.