So, are you just making these as stand alone display pieces? If you're making it to go in the suit, it won't ever be seen (if you're trying to make an accurate suit--and by the looks of your arc reactor model, accuracy is important to you).
I'm going to apologize in advance for this... This is the one thing that bugs me the most about Iron Man builds. As great as your model looks (and it does look great!), the arc reactor isn't seen while the suit is being worn. The unibeam/RT is what you see:
Now if you're just going to have this as an extra layer of accuracy and detail behind your unibeam, more power to you! Sorry for the mini-rant... :thumbsup
I'm going to apologize in advance for this... This is the one thing that bugs me the most about Iron Man builds. As great as your model looks (and it does look great!), the arc reactor isn't seen while the suit is being worn. The unibeam/RT is what you see:


Now if you're just going to have this as an extra layer of accuracy and detail behind your unibeam, more power to you! Sorry for the mini-rant... :thumbsup