Exported GLB is too large

[MenachemBerkovich]

I have simple script to load some step file, and export it into glb file.

file = cadquery.importers.importStep("E:\Inabbeet\Front 315_360 M9967.stp")
final_assembly = cadquery.Assembly(file)
final_assembly.save(path="expGlb.glb", exportType="GLB")

But the exported file is about one GB (!!!) While source step file is 77.2 MB only.
Why?
Thank you.

[jmwright]

It is hard to say without seeing the STEP file. However, glTF/glb is a mesh-based format, and for a complex shape the mesh can get fairly large. You could try adjusting the tolerance and angularTolerance parameters to see if you can decrease the size.

https://github.com/CadQuery/cadquery/blob/master/cadquery/assembly.py#L468