Not really. It is tough to scale to a body I don't have in front of me. If you had a 3d version of yourself, then it would be easier. If you don't, no real worries. At 5'8" and 145, most of the armor would retain the same length but the internal diameters will change dramatically.
There are many ways you can go about scaling this, but I'll give you 2 options to start:
1) I use Blender. I have a figure that is pretty close to my size (I made measurements and everything) and I usually scale the armor to it and make adjustments on the fly after printing.
Blender is set to metric as default. All measurements are in mm.Here's what I would do if I were you. Say you want to print a forearm piece. Take a measurement of your forearm where you want the armor to start and stop. Then take a measurement of you forearm at its widest point. Create a cylinder the same size and width and scale the armor to that size. Youtube and google are a great resource for blender.
View attachment 270041
Just note that the lower left side shows radius and depth in mm.
View attachment 270042
Also, on the right side, if you are missing all that great information under the word "Transform". Look for a small "+" sign and that'll bring it all up.
Then when your cylinder is ready and close to your forearm size, import the armor,
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Select the armor by right clicking it, then press the key "s" to scale. If you just press s, it will scale on all 3 axis. However, if you press "s" then "z", it will scale on only the z axis.
This is a very basic version of scaling and can be used over and over again.
2) I've heard others love the tool Armorsmith (
The Armored Garage). For 30 dollars, you can basically do the same thing as Blender but in a more simplified way. I'm not 100% sure about it but I have read that others have had luck with it.