I work at a makerspace, some one came in with a dimensions/mockup sheet for a fin aligner. He said he'd seen some online, but they were missing features like a stabilizer for the center rod. He wanted something universal and not just for one model, to my understanding. I'll be honest, I know nothing about model rocketry but would like to help him out and use this as an excuse to learn 3d modeling.

Is there anyone who has specific knowledge about fin aligners that could help me understand terms/more about the overall design for this because there are phrased like "curved reteation clips" and a coarse threaded center core. I have a photo of his mockup and that's about it.

Ignore the notes I took on the bottom that begin with the -, that's not his.