Import your OBJ file and then click the green flag. Works with simple OBJ files however if you use a complex 3D model, percentage of conversion is inaccurate and may be missing parts of the model UNLESS YOU USE TURBOWARP. Breaks with OBJ files linked to materials unless you delete the material link by manually editing the obj file.
Pre-loaded with a car that was simplified from this: https://free3d.com/3d-model/porsche-911-gt-43465.html
