I made myself a lifesize Palpatine and used a rubber hand that you can but from Horror shops. They are usually the cut off hands for Halloween. They are cast off a real hand and have fantastic detail and look realistic and you can buy them relatively cheap too. They are hollow but what I did was to get some really strong armature wire and feed them through all the fingers and left them long so that they come out at the opening of the stump. Then I filled all the fingers and knuckle parts with silicone (just the one you get from your hardware shop) and let that set. Then I used resin to fill in the rest of the arm. They look fantastic and are extremely poseable. I will try and find a pic of Palpy in a sec.
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View attachment 566041Here he is. Sorry for the washed out picture but it's hard to get a good picture of the pale hand against the dark robe but you get the idea. Fully poseable hands and cheap to make too. Hope this helps.
