This animation took me 1 week to create, using VizRT/NewTek's Lightwave 3D 2019 (and Adobe After Effects 2021 for callouts and editing). The model of the burner was previously created from its original SolidWorks 3D CAD assembly file, exported as STL, imported to Lightwave, cleaned up, refined, optimized, and materials assigned, which took 1 week to do, taking the original 1 million polygon STL down to 100K.