Unresolved Not extruding enough

Hi.

I have a problem with my prints. When I print something the first few layers go quite well. But from a certain point the infill lines become superthin or don't get lain down at all. You can also see this at the outside. It looks like there is not enough material being extruded. (see pictures)

I have googled this and found that you should LOWER the extrusion multiplier. I changed it to 0.9 and that did not help.

Does anyone have an idea what I'm doing wrong.

Printing at 0.3mm
230 C
45mm/s

 

If it's not extruding enough you will want to increase the multiplier. Not decrease it. Calibrate your extruder as well.

 

Thanks for that. I tend to forget that a lot of people that need help are still new to 3d printing. I should explain myself more sometimes.

 

ah thanks for the video. I did what he did and i measured that i only extruded 81 instead of the 100. So that might explain a lot. But I'm not 100% sure how i should correct for this in mattercontrol.

 

Is it right that this should be done in the EEProm settings? Where i can change the steps per mm for the E (i assume that this stands for extruder) which is currently sitting at 723.38 and then changing it to 723.38*(100/81)=893?

 

Ok, than i will try that. I will up the speed in steps. And measure again after each step. Thank you for your advice.

 

With some more testing I noticed that when I set it to 850 I get an error of only 10mm (now it extrudes 90mm instead of 100). For some strange reason the first try after I change the value it extrudes way more than the later test. For example the first test at 850 resulted in 120mm and the later test always resulted in 90. So I guess the 90 is correct. I just want to know if it would be bad if I would up the speed to 900 or even more. I don't want to break anything.

 

Did you check that the gears weren't slipping on their shafts? Long shot, but would cause variations. Just a thought. Frank

 

Okay, so after doing some more test yesterday, increasing the steps even more I noticed that it still did not really got close to 100. Maybe even started to deviate more. So I decided to do some test prints. Those were horrible so I lowered the steps per mm again. I noticed that the prints were indeed better at the original values. This is why I did a print at 850 steps per mm, but at a lower speed, 35mm/s. This seemed to be good but I noticed that after around a layer of 15 the print started to fail again. This is clearly visible in the pictures. You can see that the first layers are really good and then all of a sudden it changes. The temperature was still the same, atleast that is what mattercontrol said.

Does anyone know what is going wrong?

 

What spool holder are you using

 

uhm I made one myself, but it was definetly not stuck or something. I made sure of that

 

@WheresWaldo thanks for the advice. I added another bolt to up the tension, as you can see in the picture, but it did not seem to really change anything. The first layers are still quite okay but around layer 15 it still fails.

 

Remove the nuts by the springs. Put a washer there instead

 

@jbigler1986 it used to be without the nuts, so you mean it is now to thight?
@mark tomlinson what does that mean? and how do I tune the stepper driver?