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 
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FWIW, I bought a new Ender3 as a kit not too long ago, it was $150 IIRC. And by being forced to assemble it, I learned a good bit too. It might be worthwhile to watch their store & see if they put it up for sale again.
The only upgrade I've done that I really felt made a difference was buying an enclosure for it. Nothing fancy, it's a fireproof bag over an aluminum frame. Even more than controlling the temperature, it also keeps it dust free when not in use - that's probably the biggest win for me.
As for buying the used one - these things do wear down. Start by checking the feed gear & the PTFE tube. If the filament feeds well, then also check the belts, rollers, & nozzle. Those are really the common wear items imo. Perhaps obvious, but make sure the seller gives you a copy of the slicing software (should be free on their webpage) and also the little USB-A to Sim card doo-hickey that you need to move files back & forth.
Ive had an ender 3 pro for about 5 years. Setting it up was straight forward I just followed a YouTube video which had some tips to help make sure the frame was square.
Ive never used the included slicer. Only Cura which is pretty great.
It's definitely not the fastest but it's a great beginner 3d printer and there is no requirement to tinker with it. I just level the bed and print each time. No problems 5 years in. (I did have to replace the removable print bed top at one point but that was partly because I'd gouged it before I learned how to level it)