Hello,
You could certainly write your own tiler following the open 3D Tiles spec and using the 3D Tiles Validator to check your work. Some users have found that to be a useful exercise. However, we generally recommend using ion, as we are continually improving our tilers, and we’re able to support them when there is a problem.
If you let us know more about your application (e.g., its purpose, what it’s built on), we may be able to provide further recommendations. I know you have related threads open elsewhere in the forum, too, so feel free to continue the discussion there.
Thanks,
Matt