I have not yet written a separate post on 32 Parts of the Body meditation or “patikulamanasikāra.”
It is, of course, part of the Satipaṭṭhāna bhavana.
– I discussed it briefly in the post, “What is “Kāya” in Kāyānupassanā?”
I am not sure how much you have learned about the Satipaṭṭhāna bhavana.
Here is a link to the posts on that:
“Mahā Satipaṭṭhāna Sutta”
There is also a separate section on Meditation: