I have a hand that I want to make movable. I don't really understand how to make joints with blender. This is for 3D printing so they need to be outside not just armatures. I think I may need to cut the model where I want the joints to be and make a hinge type joint using cubes but I don't really know if that is right or how to do those things.

  • $\begingroup$ I'd start by examining existing 3D models if hand joints for printing, like in the open hand project (openhandproject.org), and you might want to do some thorough modeling tutorials to learn how to make complex shapes. A good place to find professional tuts is Blender Cookie (cgcookie.com/course/mesh-modeling-fundamentals). $\endgroup$ – TLousky Sep 22 '15 at 16:03
  • $\begingroup$ @TLousky when I clicked on the link you provided the screen read ..... Access every post, every video, every resource, every source file...starting at $23/mo! ... Is that the correct link? $\endgroup$ – atomicbezierslinger Sep 22 '15 at 16:08
  • $\begingroup$ Yes, CG cookie is an education website with some courses free and others not free (subscription based). You can find other free sources online but I don't know a more organized and thorough source. $\endgroup$ – TLousky Sep 22 '15 at 18:36
  • $\begingroup$ this really depends on what printing method you're using. and yes, you can make joints in blender, there are just so many methods. $\endgroup$ – Scalia Sep 22 '15 at 21:28
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    $\begingroup$ Take a look at this model: thingiverse.com/thing:584405 It has multiple prints of a really solid ball joint. I've printed it myself and it works great $\endgroup$ – benathon Sep 23 '15 at 22:36

I think the quickest and probably easiest thing for you to do is as you said cut the joints in Blender and instead of making a hinge system make a pin system. So basically what i am saying is have like 2 parts with 2 holes which align in the right position and then just slide a 3D printed pin/Cylinder into it. This would allow you to move along a certain axis. However if you wanted something that could be rotated fully then i would suggest a ball and clasp type system. Now this could be trickier for the fingers but would almost certainly work for the hand to arm joint.

Hope this helps!


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