UltiMaker uses functional, analytical and tracking cookies. Tracking cookies enhance your experience on our website and may also collect your personal data outside of Ultimaker websites. If you agree with the use of tracking cookies, click “I agree, continue browsing”. You can withdraw your consent at any time. If you do not consent with the use of tracking cookies, click “Refuse”. You can find more information about cookies on our Privacy and Cookie Policy page.
Line width 0.45 on a .4 nozzle is not a good idea. This is probably most of the problem. Maybe. Except then you have flow at 72%. I have 5 printers and have been printing for years and never needed to set flow lower than 100%. Even when printing tiny fonts. So something is messed up where you think you need flow at 72%.
I would try 0.35 instead of 0.45.
Set flow back to 100% - it should work - maybe you need to calibrate your extruder (move it 100mm and measure with ruler to see if it actually moves 128mm like your 72% flow seems to indicate).
You have infill at 70mm/sec and at 70% infill. I assume the 70 is to save time. MUCH better to save time by dropping infill to 30%. Infill doesn't strengthen the part as much as adding extra walls/shells. The strength improvement between 30% versus 70% is probably too small to measure. Probably about 1% weaker so the tiniest vibration will make the difference in if the part flexes too much or breaks too easily. So try 20% to 30% infill and lower the speed to your shell speed (45) to get good parts before creeping the infill speed back up towards 70 again. Every time you speed up for the infill you will get underextrusion for a few cm and every time you slow down you will get overextrusion hurting the quality.
Anyway that's it - I think the true issue is the 0.45 line width. I hope it's that simple. Or the 0.45 line width combined with 0.2 layer height and 70mm/sec which when multiplied together you get a flow volume of 6 mm^3/sec which I've done on all my UM printers but that's really pushing the capability of most feeders. Slowing down to 45mm/sec (or thinner layer height) would help a lot.
If you are printing tons of these and trying to save time look into the gradual infill feature which saves time and experiment a lot with speed and temperature (you can print much faster at higher temps but quality goes down).
Oh - and seriously consider a 0.6mm nozzle - prints twice as fast and corners are only slightly rounder - most dimensions are going to be spot on.
Link to post
Share on other sites
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Cura 5.7 is here and it brings a handy new workflow improvement when using Thingiverse and Cura together, as well as additional capabilities for Method series printers, and a powerful way of sharing print settings using new printer-agnostic project files! Read on to find out about all of these improvements and more.
S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
(Sorry, was out of office when this released)
This update is for...
All UltiMaker S series
New features
Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
Recommended Posts
gr5 2,167
Line width 0.45 on a .4 nozzle is not a good idea. This is probably most of the problem. Maybe. Except then you have flow at 72%. I have 5 printers and have been printing for years and never needed to set flow lower than 100%. Even when printing tiny fonts. So something is messed up where you think you need flow at 72%.
I would try 0.35 instead of 0.45.
Set flow back to 100% - it should work - maybe you need to calibrate your extruder (move it 100mm and measure with ruler to see if it actually moves 128mm like your 72% flow seems to indicate).
You have infill at 70mm/sec and at 70% infill. I assume the 70 is to save time. MUCH better to save time by dropping infill to 30%. Infill doesn't strengthen the part as much as adding extra walls/shells. The strength improvement between 30% versus 70% is probably too small to measure. Probably about 1% weaker so the tiniest vibration will make the difference in if the part flexes too much or breaks too easily. So try 20% to 30% infill and lower the speed to your shell speed (45) to get good parts before creeping the infill speed back up towards 70 again. Every time you speed up for the infill you will get underextrusion for a few cm and every time you slow down you will get overextrusion hurting the quality.
Anyway that's it - I think the true issue is the 0.45 line width. I hope it's that simple. Or the 0.45 line width combined with 0.2 layer height and 70mm/sec which when multiplied together you get a flow volume of 6 mm^3/sec which I've done on all my UM printers but that's really pushing the capability of most feeders. Slowing down to 45mm/sec (or thinner layer height) would help a lot.
If you are printing tons of these and trying to save time look into the gradual infill feature which saves time and experiment a lot with speed and temperature (you can print much faster at higher temps but quality goes down).
Oh - and seriously consider a 0.6mm nozzle - prints twice as fast and corners are only slightly rounder - most dimensions are going to be spot on.
Link to post
Share on other sites