Looking awesome cant wait to see this finished. As for the shaping the rounded spots you can try sanding the area to give the bondo an extra little bit to hold onto, also I wouldnt use rondo cause it might be to runny just strait bondo and as everyone will say apply a little bit then sand and apply some more. As for your fingers for the armor you could go the route of the robot hand toys from back in the day where ya have the things you put your fingers through to make the robot fingers function. I don't think your thumb would function but least you could set it up to be able to grip a gun. Heres a link of one im kinda talking about.
As for the gun if you plan on making one I have a pdf file of the gun the marines use from starcraft 2 its all colored and theres alot of small pieces but as far as I know its pretty close to scale if you want it shoot me a pm and ill mail you the files. It also comes with a stand to display the gun, witch is pretty cool. Here's a link of some guy that completed it so you can see the detail and scale. It measures H253mm/D93mm/L735mm I am not sure if you would need to resize it to fit your armor's hand, but you can probably go to a printing shop like staples or office depo and have them print it out on poster board to make it a bit larger. looking at it again makes me want to try and make the thing but it is far more complicated than my sniper I am currently working on...
Looks like the link that shows the gun also has the files for it so there ya go! im currently printing out the pages now, im such a glutton for punishment on building complicated weapons /sigh
As for the gun if you plan on making one I have a pdf file of the gun the marines use from starcraft 2 its all colored and theres alot of small pieces but as far as I know its pretty close to scale if you want it shoot me a pm and ill mail you the files. It also comes with a stand to display the gun, witch is pretty cool. Here's a link of some guy that completed it so you can see the detail and scale. It measures H253mm/D93mm/L735mm I am not sure if you would need to resize it to fit your armor's hand, but you can probably go to a printing shop like staples or office depo and have them print it out on poster board to make it a bit larger. looking at it again makes me want to try and make the thing but it is far more complicated than my sniper I am currently working on...
Looks like the link that shows the gun also has the files for it so there ya go! im currently printing out the pages now, im such a glutton for punishment on building complicated weapons /sigh