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· Bad prints - Layers messed up holes - UM2
This is standard underextrusion. I've seen it many many times.
There are many causes - for example as you get to the last 1/3 of the spool of filament the radius gets tighter and the PLA gets stuck more in the bowden and especially in the white teflon isolater just above the nozzle.
One quick fix is to simple print slower and/or hotter (half speed, print at 240C, don't go over 240C).
Another quick fix is to put the filament spool on the floor as the angle it enters the feeder is a problem (lots of friction).
Other causes are clogged nozzle, deformed isolator, ground up filament at feeder (due to sprint too tight, too loose).
The most likely cause is probably a deformed isolator. You can take it out and examine it, maybe drill it out with a 3mm or 4mm drill. Ask UM for a new one (the newer ones are glass filled and withstand deformation a little better).
Again, another likely cause is gunk in the nozzle. Especially if you recently switched from ABS to PLA.
There's a great test to see how your machine is doing. It's important to do the test at 230C. Anything above 6mm^3/sec is pretty good. If it fails at 5mm or lower you should fix it:
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.
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gr5 2,170
This is standard underextrusion. I've seen it many many times.
There are many causes - for example as you get to the last 1/3 of the spool of filament the radius gets tighter and the PLA gets stuck more in the bowden and especially in the white teflon isolater just above the nozzle.
One quick fix is to simple print slower and/or hotter (half speed, print at 240C, don't go over 240C).
Another quick fix is to put the filament spool on the floor as the angle it enters the feeder is a problem (lots of friction).
Other causes are clogged nozzle, deformed isolator, ground up filament at feeder (due to sprint too tight, too loose).
The most likely cause is probably a deformed isolator. You can take it out and examine it, maybe drill it out with a 3mm or 4mm drill. Ask UM for a new one (the newer ones are glass filled and withstand deformation a little better).
Again, another likely cause is gunk in the nozzle. Especially if you recently switched from ABS to PLA.
There's a great test to see how your machine is doing. It's important to do the test at 230C. Anything above 6mm^3/sec is pretty good. If it fails at 5mm or lower you should fix it:
http://umforum.ultimaker.com/index.php?/topic/4586-can-your-um2-printer-achieve-10mm3s-test-it-here/
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