i'd like to thank you all, I feel flattered from your comments
Also, i'd like to apologize for my delayed response..
Hirazi, about your question, this is something i make in my free time, not necessarily in a continuous manner.
Except the time i spend to find reference images, many times in between the modeling process (while looking for reference) i like to read about the history, technical information, interviews from people who used these machines, so my estimation will be with all the above included ( based on saved scenes dates).
the Tiger took me nearly 2 months, the hurricane 1 month, and the merlin engine 2 months!
the merlin was the toughest as i had only 3 views as rotoscope images (no cross sections or plan view), and a lot of time went trying to figure out what i was..modeling, and eyeballing the shape and dimensions from most of the machine parts.
Aumakua, i never thought for 3d print, this would require a specific workflow in modeling and.. a lot of money
thanks again to everybody, i'll post as well some wireframes, i should have already done it
EDIT: i've attached the wireframes, and another model also, a german anti-aircraft gun used a lot in warships as Bismarck, Prinz Eugen ect.
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