Cool thanks, I've really been thinking about the whole scaling process... Forgive me as I think out loud.
If I take a reference picture like the one I posted above. I measure the height of the Marine in the photo in centimeters and then measure my height in centimeters, I should be able to calculate a direct scale ratio.
My height is 6'4" = 193cm
Photo height is 21.20cm
I add in a 9 CM Variance to account for padding and shrinkage of the Pep/Fiber glass processes.
My final height is 203cm
if I divide 203/21.20 this equals the scale of the drawing to my actual size.
The photo is roughly 1/10 of my actual size.
Now all I have to do is measure the other body parts and scale the appropriately.
The helmet is 3cm in the drawing so to make it fit me in real life I need to scale it up 10 times then multiply it by 10 again to get the height of the part in millimeters.
For me the height of the Helm is 286mm (this isn't exactly 300mm because in my Conversion Kit I round up to avoid all the different confusing numbers)
So now I open your helm in Pepakura and adjust the Height to the scaled measurements I have and the software adjusts the scale properly to fit proportionally to my Height.
It shouldn't really matter if they were created at different times or to different scale. So long as the piece is proportional to itself. Meaning, the eyes are proportional to the Beak to the ears to the head lamp. If all those parts are built proportionally the piece will scale properly.
Now say you create another piece like a thruster pack, so long as all the details are in the correct proportions on the piece It will scale properly using the Conversion Kit. Because the height is determined my Pepakura not by the size you created it.
OK enough Rambling. I am very much enjoying your work! I have finished my first shoulder and it looks AMAZING! At first glance it does look rather big but when I look back at the reference it looks perfect.
I am working on some Legs as well they will be my first attempt at rendering a model into a Pep. But first I have to finish my daughter's MC! HOT PINK Yeah Baby!
Space Marine Shoulder Pep'd