3DPrinting
3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
The r/functionalprint community is now located at: [email protected] or [email protected]
There are CAD communities available at: [email protected] or [email protected]
Rules
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No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia. Code of Conduct.
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Be respectful, especially when disagreeing. Everyone should feel welcome here.
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No porn (NSFW prints are acceptable but must be marked NSFW)
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No Ads / Spamming / Guerrilla Marketing
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Do not create links to reddit
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If you see an issue please flag it
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No guns
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No injury gore posts
If you need an easy way to host pictures, https://catbox.moe may be an option. Be ethical about what you post and donate if you are able or use this a lot. It is just an individual hosting content, not a company. The image embedding syntax for Lemmy is 
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It is tough building stuff like mounting arms to hold weight without deforming. Most of the time it is best to make joints that only need 1 dof each. Like this is why you see the parallel mechanisms used for articulated desk lamps; each joint only has 1 dof but a bunch are combined. You'll see something similar with computer monitor arms.
Like this joint has a recess in the top and bottom for washers with a bolt passing through the middle. It may seem like the bolt through the middle would be what holds the load and any slop in the joint, but this is not the case. The bolt is only holding the compression of the assembly and it is the gap between the washers that controls the slop and weight. It took me a few iterations to imitate this type of joint with a print.
Ultimately, that arm needs another iteration to make it even more rigid, but it is usable like this. That arm is almost 5ft long with a 24in monitor on it.
That's pretty cool! I had no idea about those structural voids