6mm Fedayeen

Last night I had a crack at sculpting some "Darth Vader" helmets on some H&R Soviets to create Fedayeen Saddam figures. 

I'm finding that the "greenstuff" is drying out to much as I'm working with it - I'll need to look online for solutions.  Looking at the line-up you can tell that the figures in the middle are the ones I started with, and the I moved to the ones on the edge of the sprue.  As the putty dries out, I'm finding it becomes harder and stickier, resulting in worse sculpting.

My plan is to mix Darth helmets with balaclava'd figures (next conversion job!) to create my fedayeen for Road to Baghdad.

For those of you who aren't familiar with what I'm talking about, here is a google image search for "Fedayeen Helmets" : link

I couldn't find any images I could satisfy myself about ownership/copyright in the short time available to re-post here.