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: !functionalprint@kbin.social or !functionalprint@fedia.io
There are CAD communities available at: !cad@lemmy.world or !freecad@lemmy.ml
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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
Check out the Positron! It's the most portable one I've seen. The guy behind it, Kralyn, been providing the plans to the community so you can make it yourself.
https://github.com/KRALYN/PositronV3
Since he's released it to the public, it's possible that you might be able to find someone else selling them commercially rather than having to build it. The latest version is V3. It's so small it can fit into a filament box!
I also travel for work and have been missing my mk3s back home. I've been eyeballing the Bambu Labs printer to bring on the road with me. My company will ship things around for me as I travel to different sites, so I don't have to worry about fitting it in a suitcase. I just have to worry about it being packable and shippable, which my mk3s in it's diy enclosure is absolutely not. The bambu is marketed more like an appliance than a project, in that it's practically ready to go straight out of the box. Presumably, this means it should be able to go back in the box and ship off to the next site.