Dem bones
In which your narrator creates a way to separate parts from an undifferentiated OBJ file scan of the bones in a human hand.
Yup. :P
i look forward to the results
I've just printed and glued together a pair of middle finger proximal phalanges and am printing the intermediate phalanges for the same finger. All that is done in ABS. When that's done, I'll be looking at what can be done to print the connective ligaments in polypropylene.
have you considered using something else for the joints? for e.g. silicone or rubber (rubber might be stronger) ... I think that rubber (literal translation on how it is called here would be "live rubber", it is the compound that is used for molds for example, it is like paste but when you mix the second compound it hardens and becomes like rubber - strong, elastic .. and it sticks to many things)... if the rubber does not stick to ABS (have never tried) maybe you can design ends of the bones (joints) with something rubber can "grip" so when you cast the rubber/silicone over two bones it holds them together ... I think that will give much more natural structure then what any printed (PP/ABS) part can do .. initial test you can do with just smearing the two joints with silicone/rubber and if the result is good then you can print a cast out of abs that you spray with some ptfe so silicon/rubber does not stick to mold... You can also consider latex, it is also "moldable" and it is fairly strong ... (again not sure how good it will stick to abs but again you can make bone end in such way that joining material have a grip
Bogdan: I'm probably still going to be using latex rubber in the design. I'm looking at polypropylene for joints and ligaments, However.
Cool Forrest, is the entire skeleton available as stl's?
Is that the palm of the hand? If it is the back it looks like it in missing the knuckle ridges? You will need them for guiding the tendons.
What does your connective tissue stl look like?
Cool Forrest, is the entire skeleton available as stl's?
I only bought the hand. You can get complete skeletons.
Is that the palm of the hand?
It's just two middle fingers attached to the metacarpals {bones within the hand}
If it is the back it looks like it in missing the knuckle ridges? You will need them for guiding the tendons.
No doubt. The knuckle ridges are cartilage, irrc. This is just a straight print of the human bones. Obviously, when I try to make working fingers the design will be changing to account for the plastics I'm using.
What does your connective tissue stl look like?
Just beginning to explore that question.
James wrote:Is that the palm of the hand?
It's just two middle fingers attached to the metacarpals {bones within the hand}
I mean your stl image.
Have al look at this picture, http://fc06.deviantart.net/fs19/f/2007/237/f/f/Skeleton_Hand_Stock_1_by_qroot_stock.jpg
Yeah the tenton is held and guided by cartliage but I think the bone has more form then your first stl is showing.
... I think the bone has more form then your first stl is showing.
James: It's entirely possible. It's also possible that we are looking at individual differences. From what I've been reading there are even different bone counts in the carpal ensemble depending on the individual, never mind differences in how the phalanges are expressed.
Cool Forrest, is the entire skeleton available as stl's?
A complete arm is available here http://model.3dcool.net/model/1/22265.html It's in 3DS format but if you download a trial version of Accutrans 3D you can convert it to .stl (as a complete part or the individual bones)
In the characters section http://model.3dcool.net/list/K/22/1.htmlthere are lots of other bones, organs etc but not certain about file formats.... infact this site has loads of printable 3D models in many different categories... just some converting from 3ds, max, etc is needed.
Apologies for hijacking your thread Forrest.
Dave.
AOI has plugin to load 3ds files
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So this is what you meant when you said you are taking a different turn :)