T1 and T2 Endoskeleton Research Thread

What post nr did he post that? Looks like one of the pictures I forgot to re-save after my external HD just deleted a bunch of pictures. I need to go back through the thread again to get everything.
 
What post nr did he post that? Looks like one of the pictures I forgot to re-save after my external HD just deleted a bunch of pictures. I need to go back through the thread again to get everything.
I don’t remember how far back it was, but it was a while ago for sure.
Never compared those closely. Not sure.
Don't mind me... I'm just being tired and noticed the screw orientation on the chest...
No worries, I left for the night too.

-Dana
 
Ran some FDM test prints today. This is pretty much a total rework of the first toe (big toe) from the last images I posted. Dimensions were changed, some shapes were not close enough, etc. I also wanted to check some tolerances in the real/physical world before I continue on with altering the remaining toes. I'm also redoing much of the heel part right now too based on new findings.

Growing some parts:
IMG_0286.jpg


Comparing a sad old LFS resin casting (I've seen worse) to my new parts:
IMG_0290.jpg


I'm just using some 1/4" OD nylon bushings in the joints for testing purposes, they fit snug and still allow me to play with the range of motion:
IMG_0289.jpg


I usually print a full set of parts like this in FDM as drafts for speed rather than jump straight to resin printing. So, I will keep working through the parts and hope to have a full foot to check out next to my lower leg parts just to see the whole thing in context. I kind of want to look into pricing out machining a full set of my feet in metal...:eek:

-Dana
 
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So, those 3D prints helped me adjust a few minor dimensions on the big toe parts. I also want to tweak the hole running through the big piston which should be simple enough. But, I'm about to make this change now that I'm confident I know what's going on with the upper clevis near the toe. You see it's attached in a way that differs from the other toes and the way it pivots/angles must have required them to cut/grind machine an arc into the bottom face so that it could rest at the shallow angle they ended up wanting. All of the other toes pivot fine without this feature. So enjoy this insane nuance that I have found and I don't believe has ever been noticed or replicated before.

T1 T2 Endo Feet Clevis Curve.png


I feel totally insane at this point,
-Dana
 
Nice. I was wondering if it was damage on the feet as they are now on the EMP one when you showed that picture, but cool to see it's in the movie.

Another question. What reference did you use to make the "egg-shaped" part connecting to front forks of the upper and lower pistons. I say "egg-shape" as that's how the shape is on the LFS, however, yours look really different.
 
Nice. I was wondering if it was damage on the feet as they are now on the EMP one when you showed that picture, but cool to see it's in the movie.

Another question. What reference did you use to make the "egg-shaped" part connecting to front forks of the upper and lower pistons. I say "egg-shape" as that's how the shape is on the LFS, however, yours look really different.
You can see pretty clearly in a lot of pictures of the feet that the joint you're talking about starts from the same type of knuckle pulleys they used for the hands in T1. Then, they ground or machined a flat on it to make welding a clevis (fork) to it easier. Lastly, there is a round bushing-like object welded right above where the clevis meets the pulley. And that's how they did it. I have one more picture of ref that I took that shows this really clearly, but I got very close on my first 3D model simply by looking at the feet photos we've all been looking at forever :)

-Dana
 
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So cool they used something like the knuckle parts on the hands for the feet as well. With all you've shown, my feet models are not accurate and are still more like the LFS feet, as that was the base I was working from.

Awesome.

And Nokitten: very cool looking skull.
 
I dug up a stack of old 35mm photos that were given to me back in the early 2000's by a former Icons employee. I scanned them with my phone this morning and did a rough correction on the blue color cast all the prints had. Thought others might enjoy these:

Icons_Endoskull_Castings_01.png

Icons_Endoskull_Castings_02.png

Icons_Endoskull_Castings_03.png


Not the best photos, but I thought I'd share them anyway. I don't know if these are early castings like Artist Proofs or if these are regular parts once production got underway. However, based on much of what this stack of photos depicts from Icons, I would bet these are some of the earliest parts out of the molds.

-Dana
 
Some of the recently tweaked parts including slightly improved toe tip, the new clevis/fork with the curved cut underside, and some test hex screws with the sockets “ground down” and chamfered:
View attachment 1900185

-Dana
I think you should make the round cut-out a bit more wider - more shallow - and go higher up the side of the fork. You barely have it go past the bevel edge. It looks to go a third or almost half up the side on the original.
 
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