Here my French Groboto site mirror! ;) (Collector)
https://manuelgrobotovf.weebly.com

About MagicaCSG
Found the PLY (Menu Project / Show IO / Mesh/ Export) :)

Else PLY is enormous : the little "mecha" PLY (189 megas) gives a 290 Megas OBJ so i suppose must be decimated!

The original is 26 kb!!!

And I suppose the "denoiser" is the same than for MagicaVoxel ? Tested! Yes! Folder Plugin must be created!
https://github.com/ephtracy/ephtracy.github.io/releases/tag/0.01