All the best and good luck, H!

Thanks for all that info! I'm thinking when I do place my order, I'll get both sets and mix and match to try and make Barricade's hands. Then the left over pieces I'll hold onto if/when I work on another Human Alliance Decepticon custom...

O WAIT, I take it back. I'm sorry I was looking at the wrong version of the Sentinel hands. I was supposed to be looking at the evil version instead. Silly me, it's 1am in the morning.

Yes, the palm piece of Evil Sentinel hand can accomodate those Dread fingers. And no, you still can't mix and match the finger pieces from both sets.

To make this clearer:
Evil Sentinel Palm + Dread finger 1 + Dread finger 2 = Good
Evil Sentinel Palm + Evil Sentinel finger 1 + Dread finger 2 = Bad

Lastly, the extended length of both ES and D fingers are about the same: 23mm. D's fingers will look longer as they are bent over like claws.

Sorry about that.
- A

Could I mix and match finger pieces? Like use the Dread tip on the short part of the evil Sentinel finger, or vice versa?
Otherwise, is that Dread tip itself longer than Sentinel's fingers?

The Dread fingers are definitely longer than Sentinel's. Also, only the 'tip portion' of the Dread finger, the one that doesn't attach to the palm, has the same balljoint size as Sentinel's. The base finger portion uses a different radius ball joint.

Ergo, you can only use half the Dread's finger on Sentinel, which I guess wouldn't be what you are aiming for.

I'm thinking I'll go with the evil Sentinel hands because they, like Barricade, have three fingers. But the Dread fingers look more like Barricades. Are the Dread fingers longer than evil Sentinel's? And would they fit in evil Sentinel's base hands?

Will do!

The evil Sentinel hands should be smaller. The Dread hands are wider with slightly longer fingers. Do share pics when you have them!

Awesome, thanks! I just started painting the DotM Megatron gun yesterday. After I finish that I plan on placing my next Shapeways order.
Say... which hands are smaller, those Dread hands or the evil Sentinel hands? I'm planning on trying to customize a pair for Human Alliance Barricade...

Whoops...sorry about that. I removed the entry when I was doing some house cleaning on my library. I've re-uploaded it on this link: DOTM leader Dread hands (1 pair) by fakebusker83 on Shapeways

Best of luck!