OK, I need to check wiring, no filament runout was during printing. thx
is it possible, during some setting towers, to see the values on mainsail?
example flow
only after a change the value is shown, other indicators ar not an option?
#fan for printed model FAN0
[fan]
pin: PA14
fan¶
The following information is available in [fan]>(Configuration reference - Klipper documentation), [heater_fan some_name]>(Configuration reference - Klipper documentation) and [controller_fan some_name]>(Configuration reference - Klipper documentation) objects:
speed: The fan speed as a float between 0.0 and 1.0.rpm: The measured fan speed in rotations per minute if the fan >has a tachometer_pin defined.
https://www.klipper3d.org/Config_Reference.html?h=fan#fan
I am not satisfied with the power of the fans. I installed 2x 4020 24V fans, selfmade fan-duct, one for one side
they turn, but I cannot feal a good airflow?
the pin is set to 24VDC (left side), big wire is getting to the fans.
just made a test-tower, the printed filament stays soft and the part starts warping…
?
What are the fan settings in the slicer?
the problem start not at the beginning, the test-tower growes up about 10mm, the the bridge starts to warp, the hole tower is actally a scrap
found the problem… shame on me… the nozzle was loose
already did some tmp towers, looking fine, but still the extruder needs to be calibrated.
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temp (left) and flow (right)
215 to 185 °C, 100 to 84% flow
shadows from the iphone cam…
below 190°C it gets mat, but still strong hold
cannot see any difference on the flow… problem or good?
You usually see no difference, but you can measure: The extrusion gets smaller/thicker depending on the flow.
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Such a tower is not a good test candidate for the flow. I recommend to use a 30x30 or 50x50 square with at least 4 layers and judge the flow according to surface quality you get.
As for the temperature it is difficult. General rule of thumb:
- Lower temp is better for
- Bridging
- Overhangs
- If you get stringing
- Higher temperature is better for
- High speed prints, i.e. where high flow is needed
- Layer bonding, i.e. usually stronger
So it all depends on geometry, features, intended use and filament properties. There is no single truth.
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hmm, it is square 50x50, what do you mean?
measuring:
- 0,5 to 0,36, layer 7 is about .40 that means 88% flow shoud be good
calculation:
rotation_distance: 3.3
3,3*0.88 = 2,904
Something as simple as:
- With 0.2 layer-height make it 0.8mm to 1mm
- Set the slicer to print 4 to 5 bottom / top layers. Avoid infill
- Print at various flow settings
Check first (bottom) and last (top) layer:
- Should be nicely closed
- No gaps
- Top layer should feel smooth without ridges etc
rotation_distance and flow are not related.
rotation_distancerepresents your hardware- flow is set in the slicer
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OK, I understand, I will do a Fusion360 part for it.
flow is a slicer setting, my intense was to calibrate the rotation_distance…?
I was thinking that there is a relationship.
Please follow Rotation distance - Klipper documentation but this has nothing to do with flow or printing.
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Here’s the Printer Test model (Printer_Test_0_03.zip (10.3 KB)) that I use that matches @Sineos 's suggestion quite well:
It’s five layers, each 0.2mm higher than the last with holes at corners as I found that was the most challenging situation for a Cura generated model.
Not including heat up times, the print will take around ten minutes to run and each layer should be smooth. The semi-circle in the bottom left is actually quite challenging to get it to stay down throughout the print.
Question, shouldn’t we be able to share .stls without having to .zip them on this forum?
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I have added STL to the allowed extension.
One remark: Judging flow on the first 1 to 3 layers can be misleading since you might have effects of the first layer(s) (e.g. too much / too less squish) which will fade out in the following layers.
I prefer to judge my “flow quality” after at least 4 layers
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Thanx for adding .stls as an allowed extension.
Fair enough, I’ve been using this to nail down the first few layers, after which I tend to get very good print quality. Depending on the model and situation, I like to use rafts and this is a good indicator of the quality of the rafts.
perfect, thx!
I will do again the hardware calibration of the extruder and then printing the test part.
rotation_distance: 24.96 # BQ
gear_ratio: 7:1 # BQ
values are different to the last test, do not know why? (10,99)
50mm on Mainsail, are 50mm now on filament traveled
OK? anything else to test on the mechanic?
