Since more than a year I haven't levelled the bed on both my UM2 printers. No need to.
Using the "salt method" to glue PLA to the print bed, my models stick like rock solid when hot, and pop off by themselves when cold. So I never have problems removing the models from the plate, I never need force, and never need to take the build plate out of the printer.
So, for me autoleveling would be useless. (Although I can understand that people who daily change nozzles and materials might see things differently, especially if the nozzles are of different length.)
Instead of autoleveling, I would rather prefer a thicker and more stable aluminum plate and glass plate, which don't vibrate, are totally flat, and do not warp when heating up. The current "unevenness" of the glass plate may be less than 0.05mm, but when printing the first layer at 0.1mm, it becomes visible.
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Martin3D 0
Very interesting and thorough review!
We also recently tested the U2+ following our independent testing protocol.
Overall, our conclusion is it's a great desktop printer! We experienced some issues with Cura but it was due to an older version we were using, once we updated it was much better. We gave it a 4.1/5 rating.
You can see our full review here, let us know your feedback!
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