After Micro swiss DD upgrade,Extruder skips steps
-
B3950 is not the correct value for an ender 5.
see https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+2:+Configuration/38did you tighten the hotend while it was hot?
if there is a gap that could explain the skipping steps. -
@Veti i habe a new Silicon Heatbed but i see i dont have chnage the thermistor for hotend.
I must set the thermistor vice versa
I must change it and test it again
-
@lui2004 I'm guessing you're comparing this direct drive with the motor you linked to the original Ender 5 hotend/extruder?
I hate to say this, but I think you may find that your new extruder is a bit under powered... I have a similar spec motor (E3D pancake one) on a BMG (so 3:1 gearing) and that only just gives me the power I need without skipping steps, especially compared to my old bowden setup with massive motors. Looking at the steps/mm, your extruder is ungeared so will have 3x less force compared to mine.
You also can't do much on the motor current (its rated for 1A and you're already at 1.1A!)
With all that, you'll need to look at all the little gains you can and set your limits...Definitely look at the thermistor and nozzle tightening as the others said. Also play around with the temperature (going a bit hotter may reduce back pressure) and do what you can to minimise friction in the filament feed.
After that, you're down to finding what your volumetric filament flow limits are for your setup.
Other option is to look for a slightly more powerful motor or a geared extruder...
-
@engikeneer ok which motor is perfect for my use ?
-
I'd pick at least a 0.9 degree step angle (400 steps / revolution) motor an for ungeared extruder. I'm fiddling with an E3D titan still trying to make the pancake motor work because I punish myself, spent a couple hours tweaking the extruder just yesterday to get it to stop skipping steps at just 3mm/s (tested without the nozzle crosses fingers). For an ungeared extruder though I'd probably just go with a Wantai 42BYGHM810 if I want some snappy retracts and didn't consider effects of weight on ringing.
-
Hi
i have this Steppermotors here,are they good enough as Extruder motor ?
-
@lui2004 Yeah that one looks to have a bit more beef to it! 2.0A & 45Ncm torque vs your pancake motor with 1.0A & 13Ncm (if I trust my German & that Amazon datasheet..). It may be more than you need, and will be noticeably bigger/heavier, but if you can fit it in and don't worry too much about printing at very high speeds, you should be fine.
Having said that, I would agree with @lord-binky that a 0.9deg stepper would likely be better as it will give you more resolution. TBH there aren't any ones that jump out at me on OMC. Maybe try Farnell or Digikey? TBH I generally just go for the E3D ones (https://e3d-online.com/collections/motors/products/motors) The 'Compact but Powerful' is probably about what you want?
Have you read this page?
https://duet3d.dozuki.com/Wiki/Choosing_and_connecting_stepper_motors -
@engikeneer ok i have order the e3d compact but Powerfull.
Somthing i must change with this Motor in duet config ?
Thanks
-
your extruder motor is a 1A motor and you are running it at 1100ma. it will get very hot.
but that motor is not powerful enough for an ungeared extruder.i use the exact same motor on my ender 3, but with a bmg extruder.
and this mount
https://www.thingiverse.com/thing:3354741and its working very well.
-
@Veti yeah it looks interessting.
The old Motor habe 1.8 and the New one have 0.9 die i change somthing on duet for the New motor ?
-
@lui2004 said in After Micro swiss DD upgrade,Extruder skips steps:
The old Motor habe 1.8 and the New one have 0.9 die i change somthing on duet for the New motor ?
yes, double the e steps
-
You'll want to change the motor current to something like 1.4A to start with for that one (M906 E1400) and E-steps in the config (M92 Exxx), doubling what you have will get you in the ballpark. If you don't want to fiddle with the extrusion factor often you will want to fine tune your extruder after the change to dial in the exact steps per mm. (ex: Triffid's E-steps fine tune) since it'll change your flow rate.
-
Thanks for All your Help this forum is super 1a
Another to Double the steps is for x16 is it more accurate for extruder to make x128 ?
Thanks a lot
-
@lui2004 said in After Micro swiss DD upgrade,Extruder skips steps:
is it more accurate for extruder to make x128 ?
In some very specific cases where there is very small amounts of extrusion it can help, but in normal cases, no. Stick with x16 and interpolation. Using a 0.9 degree motor and a geared extruder should already get you up to around 800 steps per mm which is a lot of resolution without even changing microsteps which aren't as accurate anyway.
-
@Phaedrux my E-Steps is : E137.78 and for the new Steper that i order the E-Step is Double also 275.56, make somthing wrong ? you wrote somthing about 800 steps
-
800 steps are for 0.9 + bmg extruder.
i would suggest that you start with x16.
print a benchy
change to x128 and print the same benchy with the same filament and same settings.
compare the print and decide for yourself if the print quality has increased. -
@lui2004 said in After Micro swiss DD upgrade,Extruder skips steps:
you wrote somthing about 800 steps
it was just an example, sorry for the confusion.
For what it's worth, I use x64 microstepping on my Ender 3 to get the steps per mm up a bit on the stock extruder.
-
@Phaedrux no problem
I have mount today the New stepper and the prints looks a lot better.
I got a free runout filament sensor and i have connect it on E0 stop but i dont know how to make the M591 for RepRapFirmware for Duet 2 WiFi/Ethernet 3.1.1 (2020-05-19b2)
Ps: i got it i must switch the Red and Black wire
Thanks
-
@lui2004 said in After Micro swiss DD upgrade,Extruder skips steps:
I got a free runout filament sensor and i have connect it on E0 stop but i dont know how to make the M591 for RepRapFirmware for Duet 2 WiFi/Ethernet 3.1.1 (2020-05-19b2)
See here https://duet3d.dozuki.com/Wiki/Connecting_and_configuring_filament-out_sensors and here https://duet3d.dozuki.com/Wiki/Gcode#Section_M591_Configure_filament_sensing
-
ok thanks i have install it with success !
i connected on E0_stop and insert M591 in my config like this:
;Filament Sensors
M591 D0 P2 C"!e0_stop" S1 ;Extruder 1(0)
