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jens3

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  1. jens55 27 Jun 2020, 18:26 I am experimenting with dual material printing. I find that I have a lot of oozing during extruder switching due to a significant temperature difference between standby and active mode. I had anticipated to compensate for this by using the Cura feature "nozzle switch extra prime amount". After waaaay too much screwing around, I seem to have determined that this feature is only available if you use a prime tower (no mention of this in the little help text and the feature is not grayed out when no prime tower is selected). Is there a magic incanta
  2. Cura has an entry for heat up and cool down times for each extruder. I am still messing with those and they seem to be inconsistent to my way of thinking about these parameters but they might work for you. In my way of thinking, the heat up parameters in degrees/sec is exactly what you want but I suspect that Cura's implementation of this is not complete or is not working correctly or I misunderstand it's intent. In my way of thinking Cura says 'I will need the next extruder soon and based on how fast it heats up, I need to do so at x time'. The idea being that the new extruder is at
  3. When I do a two colour print in cura and switch to a different extruder, cura powers up the newly chosen nozzle and waits until it has reached operating temperature before it continues. Cura does not however start dropping the temperature of the now unused nozzle to it's standby temperature until the new extruder is at temperature. It seems that the command to drop the current temperature is executed after the command to bring the new extruder up to temperature. The result is that the now inactive but still at temperature nozzle gets dragged over the model and contaminates the print.
  4. I am trying to sort out dual filament printing. For reasons that are a mystery to me, no matter what I do and what settings are, the printer will always prime the first extruder even though no material will be printed for several layers. The sequence will be as follows: Extruder 2 is heated to operating temperature, Extruder 1 is heated to standby temperature. The printer then prints brims (if configured) for the model (in this case overridden to extruder2), prints the brim of the prime tower even though it is specifically not configured. (this also prints with extruder 2). After that, th
  5. In the past, the setting search box was not too helpful when searching for a word that wasn't the first and I got into the habit of not using the search function. Mind you, in this case I would likely have searched for 'support' and I should have found it. Senility is setting in 😞 Enabled the option and voila ... it's implemented rather odd in that it doesn't do a brim around the individual support lines but the net outcome of better adhesion is the same.
  6. CRAP !!!! I spent forever (well maybe an hour) searching for that option but just couldn't find it! I did look in the settings visibility too, honest 😞 Thank you VERY much. I am making an eye doctor appointment on Monday !
  7. Is there any way to generate a brim for support lines ? When you get very low support percentage the individual lines tend to lift and it would be nice if there was a way to increase the adhesion to the build plate.
  8. Printed with 30 mm/sec all around. Just to clarify, the sequence is : Print inner wall on previous layer increase layer print 'defective' infill line on current layer print a bunch of perfect infill lines print one infill line intersecting the defective line that just barely touches the wall layer (once it gets printed) Print outer wall print inner wall repeat. With the new settings, the 'defective' line now juuuust touches the wall in one out of 3 layers Only the infill line immediately next to the defective infill line sho
  9. Outer wall speed is 20, inner wall speed is 40, infill speed is 10
  10. Turns out it is indeed the first move after the wall but reducing the speed by a factor of 3 did not change the outcome by a bit.
  11. The speeds have already been drastically reduced to avoid just that possibility. I have reduced the infill speed to 10 mm/sec and will do a test print.
  12. ... as requested CFFFP_duet roof molding sample.3mf
  13. combing is off. Would you like me to post the entire file?
  14. The gcode that does layers 4 and 5 .... layer4and5.gcode
  15. Gone to 100% infill overlap, added 1 mm3 of extra prime just for the heck of it and this is the result: In this print, all but one of the infill lines meet the wall. The joint that doesn't meet the wall appears to show the extra prime amount as a bit of a ball at the beginning of the infill line which is well away from the wall. The wall/infill joint right next to it shows the infill barely touching the wall in spite of the setting of 100% overlap
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