Hi,
Although printing with normal setting at 230 is quite high, in some cases it can be nessesairy. When printing with 2.0mm nozzle on UM2, with layer thicknesses of +-1mm. I need to go up to 250 te get the best quality of prints!
Besides that there are also quite significant differences between different UM's (even in the same batch). sometimes even having differences of up to 15 degrees difference between printers.
In you're case the fan, and adjustment of temperature as stated is probably the way to go.
If it is a old printer, you could also check if the ptfe tube above the nozzle could case this upswelling. But I would only suggest that if both other options given dont work, and the printer has been printing quite a lot.
Although prisumable it is correct, but do you use propper 2.85mm filament and not 3mm (3.00) filament? this could also result in a clock if the filament goes to the upper tollerance of 3.10.
Kinds/regards,
Ewoud
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geert_2 560
I believe 230°C is too high for PLA, at least at normal default speeds. Then it would soon burn inside the nozzle and get brown. Try 210°C first.
Also, did you check if the little fan at the back of the nozzle does work well? If it does not, heat will travel upwards into the filament, and soften it way up there. This could cause blocking due to "swelling" (actually the half molten filament is squeezed together). This is for an UM2, I don't know how it looks in an UMO or UM3.
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rebekah_harper 60
I have not seen a material profile that goes that high in temperature.
in other printers I have found this to be a common cause of blockage.
it's heat creep where the heat travels up the material faster than it can cool and the material softens and compresses, this causes it to expand as it can't go anywhere else especially when printing fine as your extrusion rate will be slow. this expansion then causes it to get wedged.
you might have to do a hot and cold pull to make sure its cleared out.
hope this helps
PLA as a standard should max out at 210 but normal printing is at 195 to 200.
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gr5 2,295
Is this a UM2? What printer is this.
If UM2 I bet that 3rd fan on the back of the head isn't spinning - just as geert says. It should be spinning any time the head is above 40C.
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