Jump to content
Ultimaker Community of 3D Printing Experts

Leaderboard

Popular Content

Showing content with the highest reputation on 07/18/2021 in all areas

  1. Hi @ZachariahS, First, -what you observed -and corrected by turning off "combing" (before slicing) is possible.. I'm just focusing, -what is going on here. Lets look what kind of improvement Cura does when using "combing" vs., turning it off. The wording below, is just in the first part of the "official description" of the combing mode under "Travel Setting" in Cura.: Combing will reduce the chance of defects on outer surfaces of the print by recalculating all nozzle travel moves to stay within the perimeter of the print. This results in greater travel distances, but with a reduced need for material retraction. If combing is disabled, the material will retract and the print head will move in a straight line to the next point. Here you'll find the full description: https://support.ultimaker.com/hc/en-us/articles/360012611299-Travel-settings Here is a picture of your two object to be compared between the "two" settings. The picture above shows "two sessions" of Cura 4.10.0 running simultaneous in Windows 10. In the left side, combing is off and in the right combing is on. Using the calculated time in the gcode files, give: 3h & 53 min (no comb) -and 3h & 42 (with comb). (The printing pattern inside the object is all the same in both situations.) So, travel, retraction and time are the "only" difference in between those two sliced object. So the question is; how can this "little" difference destroy my print? Let's do some more analysis using Cura, this time for the speed; The speed selected here is; Printing Speed : 70 mm/s Infill Speed : 90 mm/s (brown) Wall Speed : 35 mm/s (blue) Outer Wall Speed : 35 mm/s (blue) Inner Wall Speed : 60 mm/s (green) Top/Bottom Speed : 60 mm/s (green) The temperature settings are: Bed 55 deg.Celsius and Extruder 200 deg. Celsius. I've had a good look at your pictures and been reading the observations you recorded: L is low temp and h is high temp. (Meaning not very Low and not very high -but kind of outside norm printing temperature.) I can see that you are strugeling with both over and under temperature..? Your nozzle temperature must fluctuate some, right? Or maybe no? Next picture: Using combing, make the printer "demand" for "more and less" filament at a little higher rate, but lack of heat energy bring down the temperature at the nozzle and when there is less demand the heat climb.. This is a classic example of lack of heat transfer! If your nozzle temperature do not fluctuate much or actually is stable, -the above is the problem. I'll think this is the main problem you've being fighting for too long. ------------------------------ When printing without using Combing, the "constant" demand of feed is reduced and the temperature become more "normal" stable for this object printing with this speed.. Also, keep in mind, combing is not meant to be used on all kind of object. ------------------------------- But your original problem(s) are still there. (I'll guess you have an aluminum heat block with brass nozzle, -do you have a picture of it?) Well, this is just my theory about your problem Good luck and happy printing. Torgeir
    1 point
  2. Dear Cura team I have a problem with Keep/discard when changing profiles. This function seems like good idea, but it allways make a lot of problems. It causes some unexpected changes does not matter what if you choose keep or discard.... I know it is probably high-tech function and if I take a week, I will understand it. But I do not have fudging week to learn to respect so unsuccessful disfunctions like this...!!!! Is there anybody who use this function successfully??? or is it just a programators love...? (i use cura for 4 years and I still do not understand it. It coused 1000 of problems...) If I explane: 1. there is not writen, what changes it means 2. I can never chage setting, switch to other profile and back to see those changes which I left there... 3. Logics of this functio is probalby ok, but only for matrian. In UX is better to use easyer mind constructions... 4. It is not only my computer problem 5. I still dont understand what is a purpose of this function. Who is it made for? Thank you and
    1 point
  3. Voici un petit screen qui montre comment on doit voir un objet de l'intérieur.
    1 point
This leaderboard is set to Amsterdam/GMT+02:00
×
×
  • Create New...