I’m starting to use the eSun PLA filament, trying to lower my filament costs.
But, I don’t know why the printed walls are very weak. I’m using the same print parameters as used with my previous filament, which generated a good print.
But now, walls are not “fused”. You can see 4 fine walls and very weaks instead of a one solid wall.
I’m printing at 200º and using Slic3r.
Any idea to fix this ?
Yes, it’s correct: 0.4.
Nothing has changed on slicer settings. The only change is the filament
brand. Maybe I must set flow to more than 1 ? Or less temp so plastic is
more dense ?
Maybe trash esun filament and return to my previous brand ?
Have you measured the average filament diameter for this specific roll and put that figure in.
(keep in mind i still have failed to get a printer working properly) it looks like it is under-extruding - most likely this filament diameter is smaller than the one you used before. it could also be that the temperature you are using is a bit higher for this filament than for the previous one (as a result the plastic strands are slightly thinner). how about a calibration cube?
Looks like under extrusion to me. Every filament batch, and even more so from brand to brand, will behave a little differently to the same slicer settings. You can get pretty much any filament to work but you need to calibrate each roll for the nominal diameter and thermal properties in the slicer settings.
Tell your slicer that the actual diameter is 1.65 and bump the temp to 205. See what happens.
I use the system below to calibrate all my filaments and get great results. https://www.thingiverse.com/thing:1037301
You’re definitely under-extruding. Check the filament diameter, but you might have to adjust the extrusion multiplier as a fudge factor to account for the fact that drive gear teeth bite more deeply into some filaments than others (especially some bad drive gear designs), thereby changing the effective diameter of the gear. If you really want to do it right, you might have to recalibrate your E steps/mm for different filaments, but the extrusion multiplier is a more practical solution.
you can roughly add 1% flow (0.01) for each 0.01mm deviation. So if it is 1.69mm and you slicer is set to 1.75 you need to increase flow with 6% (1.06)
Bit higher temp maybe…
It’s flow rate, not temp. The temp is fine.
I garauntee his filament is a bit thinner than the last stuff. @Juanjo_Sanchez Did you measure the last filament, or if you didn’t, do you still have a scrap you can measure? Ideally, you’ll measure both the old and new, and do what @Ulrich_Baer / @Whosa_whatsis and others have said.
Don’t forget that when measuring filament to measure it at a couple of angles as it can be out of round.
When you added the filament, did you make sure it was the right filament diameter. Maybe it defaults to 3mm instead of 1.75mm when you add the filaments. I do think you are pushing out close to half of the correct amount of filament, so I am sure that is it.
@NathanielStenzel 1.75mm filament has 1/3 the cross-sectional area (or volume per unit length) of 3mm, not 1/2.
@Whosa_whatsis Oops. You are right. still, the under extrusion may be that bad. 1/3 the material needed. I guess I was thinking width instead of area when I said half.
Thanks for all suggestions and comments. I don’t have a caliper to check filament’s diameter. So, I started a trial&error test.
See the attached picture. Left is about 1.5 flow increase, still bad. Right is 2 flow, so 200% increase in flow. Still not good, outside wall is not fully connected. I don’t know why.
I’m trying to print my piece with this 200% flow increase, and is still not good. Walls are more fused, but there is still not fully connection like test pieces
Should I still increasing flow ?
@NathanielStenzel My slicer is configured to 1.75mm. I haven’t changed the setup and worked with my previous filament. I haven’t created a new profile for this filament. Now I just modified the flow.
300% sounds like it should seal the gaps. It seems odd that it is listed as 1.75mm filament in the filament profile unless you are not using the profile. When slicing, does it say “default” under filament or does it say the filament you are using?
That’s a big discrepancy. You shouldn’t have to change it by more than about 10% at most. I’m suspecting a mechanical issue. Either that or something else in the profile is way off.
I think he is slicing with the “default” filament which Slic3r never lets you change the settings for. It says 3mm by default, so selecting it would produce 1/3 the filament needed.
if you switch back to the old filament- is it working fine again? - or could your nozzle got cloged? Also maybe an transport issue with the new one.
I think 300% is way too high. The filament would need to have a diameter of 1 mm instead of 1.75 to get this big of deviation. On the other hand, if your slicer thinks the filament is 3mm this would fit perfectly. 1.75mm with 300% flow is the same amount of extrusion as 3mm with 100% flow.
@Whosa_whatsis @NathanielStenzel To avoid problems with slic3r, I’m using fresh install of Cura, seting up all parameters (1.75, flow to 1) and the print quality is exactly the same to the first pieces. Walls are not connected.
@NathanielStenzel No, I have select ‘eSun 200º’ which is the name I gave the profile.
My extruder is a bowden setup with E3D Titan Extruder, and hotend is E3D-v6.
