I have been printing for some time at 250 degrees (ABS prints) and last night when I took my hotend apart I saw that the teflon part is already deformed. The inner hole is 2.9x3.1mm... Already noticed that the extrusen speed was already noticable lower. Did not have under extrusion with 40mm/s at 0.1 layers and now I do when it is filling in large flat areas.
So I agree with nallath.
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nallath 1,123
Yes, but it will probably ruin your nozzle. The teflon part in the nozzle should not be heated above 260, as from that point it will start to degrade rapidly.
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