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: !functionalprint@kbin.social 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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All states require you to get a background check on the purchase of a firearm from a gun store. Waiting periods are in a minority of states. Pretty much any felony, even nonviolent ones prohibits you from buying a gun.
The 'gun show loophole' is actually just the in private party sales (like selling your neighbor your gun) no background check is mandated. This is because the law requiring background checks is a federal law and the federal government has the authority to regulate interstate commerce but not intrastate commerce. Some states like NY have stricter background check laws than the federal law.
Bows, knives, & machetes all don't require background checks. Grenades, technically any can get a license to own & make explosives but each one carries a $200 tax in addition to the hoops required to get the license, so pretty much no one really does that recreationally.
I didn't mention it in my comment but you assume a lot of risk in a private party sale. We aren't talking about illegal guns but ones that have been registered at some point in time if they aren't historical.
If you want to sell a gun, you should go through an FFL to avoid liability.