Import the obj file into the import: obj list https://turbowarp.org/1011078141?turbo if u want speed This is not compatible with quads or n-gons Wait until the project stops running Export the three lists into the original project this runs at around O(n^3) to O(n^4) complexity, so it can take from a few seconds to several minutes to generate based on the obj file it also uses recursion so if you have a really massive obj file, it may hit the recursion limit BVH algorithm from https://jacco.ompf2.com/