Wednesday, July 26, 2017

Sizing Down the Stormtrooper Biceps

So I've been working on my biceps today.  Little by little with tape.

Before I began, though, I did some measurements of the bicep pieces.  My flexed bicep is 10.5" (don't laugh, I told you I'm tiny).  At the armor party, the consensus was that you should have about 1/2" of space around the armor and the arm when it's on.  So I added an inch to my bicep measurement, which made the internal circumference of my bicep a total of 11.5".  Using a handy Google calculator (because I never paid much attention to algebra in school TBH!), I figured out the diameter of the inside of the bicep piece for my arm.   That came to 3.66".  So that was the approximate diameter I was aiming for when reducing my bicep pieces.

I did some more calculations, and figured that I would need to remove approximately .8" from each of the bicep pieces.  Since the pieces aren't symmetrical, I had to scientifically eyeball how much to take off of each side (I'm a fan of the Scientific Eyeball method).  I squeezed the parts together, taping the right bicep pieces together, so it would match my calculated measurements.  Sliding it on, it fit pretty well over my compression shirt.  Yay!

So I clamped the bicep halves to my table and removed a little material at a time.


And then look at how much I removed!  Trimmed down to my size on the left, untrimmed on the right.  This looks so flippin' scary, doesn't it?!   :blink:


But then when you consider that the original untrimmed bicep has a 16.5" circumference (5.25" diameter), and my scrawny arms are just a 10.5" circumference, you can see why so much needed to be removed.   Take a look at the size difference!


I will give my trimmed pieces their own little spa treatment in a hot bath later to give them a better shape once I'm certain with the final fit and glued them together.

I still may take a little more in, but I'm happy enough with it for now to move along.  Now to tackle the left bicep.  Wish me luck!

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