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Ultimaker Community of 3D Printing Experts


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  1. Having a more powerful heater will allow you to print at higher speeds with more consistent temperature. The faster you push (cold) filament through the block the more juice you will need from the heater to melt all that extra plastic. Another nice side effect is that it heats up a lot faster so there is less waiting time when you start the print.
  2. Same here! Well worth the money! I can now print at lower temperatures without under extrusion.
  3. I was actually considering buying the UM2+ upgrade since I was having all kinds of trouble with slipping feeder, under extrusion etc. I haven't actually tried the UM2+ feeder, but what I can see from the pictures its still somewhat the same kind of mechanism only that it is easier to clean. It would seem that it could suffer from the same flaws as the original one. It has one shaft from the stepper and one bearing pressing the filament to that, essentially deforming the filament. It is geared as well, but that does not help for slipping. If you have a look at the bondtech feeder, it has dual
  4. I just wanted to share my story about a non-working hot end fan. When I received my Ultimaker 2, I noticed that it would only run for a few minutes before it jammed. After some reading on this forum I checked the hot-end fan on the back. This was not running at all. I tried to power the fan separately and it still would not run, so it was confirmed that it was dead. I replaced it with a new one, but it still would not run. Just to be sure that the cable from the mainboard to the fan was ok, I tried to power it with a separate power source using this cable. It worked. So the mainboard was th
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