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I bought my first 3d printer 2 weeks ago and I'm already looking to upgrade. It's a longer LK4 pro. I've been able to successfully print some stuff with decent quality, but I'm trying to make some smaller more intricate stuff and I need more accuracy. What should I upgrade to get more finer details? Also how hard is it to add a auto bed leveler and is that possible with the lk4 pro?
just change the nozzle to a smaller size: 0.25 is great for really fine detail.
Changing the board or extruder won't necessarily give you higher quality.
But a smaller nozzle and the correct slicer settings (slower and slightly hotter with less retraction). Will make a lot of difference.
Basically what you have is - for all intents and purposes - an ender 3.
so go watch all the: upgrade and modification and improvement videos for that. Most will apply.
There are millions - it's not a great design - so a LOT of room for improvement.
But for cheap, quick quality results - smaller nozzle works well. Just be aware that things will take a LOT longer to print :-)