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: or !functionalprint@fedia.io
There are CAD communities available at: !cad@lemmy.world or !freecad@lemmy.ml
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 
Moderation policy: Light, mostly invisible
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It depends a lot on what you have in mind?
Something like a parametric mechanical gizmo will be very different than a sculpture thingy.
Parametric CAD:
I had to create a part that laid flat over decorative moulding. I took one end, traced its cross-section on paper, added an "L" traced with a square as a reference to compensate skew and to have an easy known dimension reference, then took a picture of that.
Opened in inkscape and traced path from bitmap, export to dxf, import into 3d cad software and use as sketch in the rest of the part.
Sculpting CAD:
Or maybe you're talking about something like a mini and looking to do photogrammetry instead.
Haven't tried that, but at least you know what it's called