Ahmed saab, it is people like you who make morons like us feel so embarrassed about our (non) existing abilities.
I can try to appreciate the hours of effort and ingenuity that went into making each of these masterpieces, especially considering that access to the original drawings/specifications would have been well nigh impossible. Each machined part in these pictures feels so exquisite!
If you are reading this, Ahmed saab, may I humbly request you to share more details of these endeavours, i.e. how you went about building each of them from scratch. I volunteer for putting your experience into words right here for the world to see and appreciate (no that you haven't garnered enough respect and appreciation already).