Part cooling fan not strong enough
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Hi,
So I'm a beginner to intermediate in 3d printing. I can understand configs and the basics of how things work and I managed to set up an older Anycubic Kossel with a Duet3d Wifi. Everything works but I'm having problems with part cooling. The Fan is a turbine 12v 50x50 and while it works correctly I feel like it's not giving the proper cooling. I keep testing with the benchy print and the front of the body, where the overhang should be tested is not going well.
I'm printing PLA at 190 with 80mm/s speed (0.3 and 0.2 layer height). Played a lot with temps, speeds, flow, and nothing changed and that's why I reached this conclusion.
So is there any way of increasing fan power beyond the default max or something like that? Or any other solution. I don't think a different cooling duct would work better. And I tried the fan on a different Kossel with the same effector but with the stock board and it definitely sends in more air.
Here is my config file:
config.gand here are some photos with one benchy and my board wiring and part cooling ducts.
Cheers
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; Fans
M950 F0 C"fan0" Q50000 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned offYour fan frequency is very high. Set it to 500, not 50000
M308 S1 P"e0temp" Y"thermistor" T100000 B4138 ; configure sensor 1 as thermistor on pin e0temp
This is not the correct thermistor setting for an E3D thermistor (assuming you fitted one of theirs when fitting their hotend)
Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is
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@andreic I think your ducts produces to much back pressure. You should test the fan in "free air" for comparison...
Mankati FSXT+, DeltaTowerV2, E3D MS/TC
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Thanks for looking and answering. Yeah, I did a test with that frequency just to see what happens. it's 500 now and it was before too.
About the thermistor thou, I did not notice that. I followed some instructions on what to select and I did not check on the thermistor for E3D. You are right it is a full E3D kit and it has the E3D Thermistor.
Can you help me out with some info on what should be there instead? I didn't have problems with it but I'd rather have the correct settings.
Thanks again
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@cosmowave
Yep tried it. I have an identical one on another Kossel with stock board and it works great and I have been using it for a year.cheers
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M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.060000e-8 ; -
just tried it and it seems to be messing up my bed thermistor or something
Error: Temperature reading fault on heater 0: unknown sensor -
@andreic post your whole config and the output of M115
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M115
FIRMWARE_NAME: RepRapFirmware for Duet 2 WiFi/Ethernet FIRMWARE_VERSION: 3.2.2 ELECTRONICS: Duet WiFi 1.02 or later FIRMWARE_DATE: 2021-02-11; Configuration file for Duet WiFi (firmware version 3) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool v3.2.3 on Tue Mar 23 2021 21:22:33 GMT+0200 (Eastern European Standard Time) ; General preferences G90 ; send absolute coordinates... M83 ; ...but relative extruder moves M550 P"Kossel" ; set printer name M665 R133.755 L285 B115 H271.591 ; Set delta radius, diagonal rod length, printable radius and homed height M666 X-0.84 Y0.04 Z0.79 ; put your endstop adjustments here, or let auto calibration find them ; Network M552 S1 ; enable network M586 P0 S1 ; enable HTTP M586 P1 S0 ; disable FTP M586 P2 S0 ; disable Telnet ; Drives M569 P0 S1 ; physical drive 0 goes forwards M569 P1 S1 ; physical drive 1 goes forwards M569 P2 S1 ; physical drive 2 goes forwards M569 P3 S1 ; physical drive 3 goes forwards M584 X0 Y1 Z2 E3 ; set drive mapping M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation M92 X80.00 Y80.00 Z80.00 E422.10 ; set steps per mm M566 X1200.00 Y1200.00 Z1200.00 E1200.00 ; set maximum instantaneous speed changes (mm/min) M203 X18000.00 Y18000.00 Z18000.00 E1200.00 ; set maximum speeds (mm/min) M201 X1000.00 Y1000.00 Z1000.00 E1000.00 ; set accelerations (mm/s^2) M906 X1000 Y1000 Z1000 E800 I30 ; set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeout ; Axis Limits M208 Z0 S1 ; set minimum Z ; Endstops M574 X2 S1 P"xstop" ; configure active-high endstop for high end on X via pin xstop M574 Y2 S1 P"ystop" ; configure active-high endstop for high end on Y via pin ystop M574 Z2 S1 P"zstop" ; configure active-high endstop for high end on Z via pin zstop ; Z-Probe M558 P5 C"e0stop" H5 F100 T6000 ; Set Z probe type to switch and the dive height + speeds G31 P1000 X0 Y0 Z13.8 ; Set Z probe trigger value, offset and trigger height M557 R105 S20 ; Define mesh grid ; Heaters M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.060000e-8 ; configure sensor 0 as thermistor on pin bedtemp M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0 M307 H1 R1.892 C235.1 D6.18 S1.00 V12.5 ; enable bang-bang mode for the bed heater and set PWM limit M140 H0 ; map heated bed to heater 0 M143 H0 S120 ; set temperature limit for heater 0 to 120C M308 S1 P"e0temp" Y"thermistor" T100000 B4138 ; configure sensor 1 as thermistor on pin e0temp M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1 M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit M143 H1 S280 ; set temperature limit for heater 1 to 280C ; Fans M950 F0 C"fan0" Q50000 ; create fan 0 on pin fan0 and set its frequency M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency M106 P1 S1 H1 T50 ; set fan 1 value. Thermostatic control is turned on ; Tools M563 P0 D0 H1 F0 ; define tool 0 G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C M501 ; Custom settings are not defined -
@andreic you've changed the temperature sensor for your bed rather than the hotend.
That's why your bed isn't working correctly.M308 S0 p"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin bedtemp M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0 M307 H1 R1.892 C235.1 D6.18 S1.00 V12.5 ; enable bang-bang mode for the bed heater and set PWM limit M140 H0 ; map heated bed to heater 0 M143 H0 S120 ; set temperature limit for heater 0 to 120C M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.060000e-8 ; configure sensor 1 as thermistor on pin e0temp M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1 M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit M143 H1 S280 -
yeh...you're right. hurry makes stupid.
Works now. gonna do some tests with this tomorrow.Thanks and i'll get back with the results.
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@andreic Perhaps somebody replaced the original fan with a quieter one but didn't check the CFM rating and it's too low.
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@donstauffer
Nope. Tested it on the other system and there is a clear difference.@jay_s_uk
Still the same problem after a PID tune too.
