Hi, I have checked the belt pullies, the belt tention and removed steathchop, all is correct. But from one print to the next I get a massis layer shift. Any ideas why this could be?
#layer shifting
lusty wadi
ionic surge
What are you accelerations at? It is possible that you're pushing it too much and skipping steps
lusty wadi
What are you accelerations at? It is possible that you're pushing it too much an...
4000
Dropping it down to 3000 and doing another test print
sour heath
Could you provide your configs
Mainly TMC settings, stepper settings
Which steppers are you using?
Also what Accel do you have set in your slicer?
lusty wadi
[tmc2209 stepper_x]
uart_pin: PC4
#diag_pin: PG6
run_current: 0.750 #0.68
#stealthchop_threshold: 999999
[tmc2209 stepper_z]
uart_pin: PC6
##diag_pin: PG10
run_current: 0.570 #0.650
stealthchop_threshold: 999999
[tmc2209 stepper_y]
uart_pin: PD11
##diag_pin: PG9
run_current: 0.750 #0.68
#stealthchop_threshold: 999999
ionic surge
your actual speed print settings?
because those are limits that can be overriden by the print speed settings
lusty wadi
[printer]
kinematics: corexy
max_velocity: 300
max_accel: 3000 #Max 4000 300 default
max_z_velocity: 5 #Max 15 for 12V TMC Drivers, can increase for 24V
max_z_accel: 350
square_corner_velocity: 5.0
sour heath
[printer]
kinematics: corexy
max_velocity: 300
max_accel: 3000 ...
i has nothing to do with the current problem, but I would advise to reduce the z accel a bit
I'm personally running speed 10, accel 100 for z
and what are the steppers you are running?
lusty wadi
Big tree tech tmc2209 on an octupus board
sour heath
steppers, not drivers
sour heath
NEMA 17 x 48mm, 1.8 Deg/Step
manufacturer and model
different models can have different specs even though the general size is the same
sour heath
Sorry brain is working overtime
dw, we'll get there eventually XD
lusty wadi
Not mentioned. I have been using them from the moment I built it, They have been running perfect for a while now.
https://3dprintingstore.co.za/products/stepper-motor-nema-17-x-48mm-1-8-deg-step
I had a belt strip last week, the belt stretched. I replaced it with the Gates belts. Since then I have been having this issue
sour heath
one idea: you are running a rather high current on them (for their spec)
Do you have heatsinks on them?
Otherwise I have a theory:
Belt is a little too tight -> stepper overheats -> looses steps
lusty wadi
I had it tuned to 110 steppers on 0.680 and this still happened. Currently they are tuned to the Fender Tuner to A#. Is A# to high? My previous belt setup was on A# and worked perfect for months.
sour heath
Hm
lusty wadi
I used Fine Tuner to get it to 110Mhz. But the belts seemed very loose
sour heath
I used Fine Tuner to get it to 110Mhz. But the belts seemed very loose
If the feel quite loose you might want to tighten them a little more and try again
lusty wadi
Okay will loosen all and re tention and post feedback
fast light
Your run current is to high and you need to remove stealth chop
See this thread with the same issue https://discord.com/channels/747612067951018075/1202653211023114241
lusty wadi
I have lowered it and removed the stealth chop. Busy with a test print, seems to be working fine currently
sour heath
<@455431219606323203>
the steppers he listed have a rating of 1.2A (which Is peak I suppose cause normally peak is the one listed)
fast light
Ohh doesn't notice that
Use the calculator to figure out the proper run current then
That's a pretty low power stepper, or is that max run current without the 80% safety?
sour heath
0.68 rmc if 1.2 is the peak
I don't know, the link he posted just says 1.2A/phase
so it's either 0.68 at 80% or 0.84 at full power
fast light
Maybe it was just the stealthchop then
upper snow
If one belt was bad most probably the other belt is bad too. If you only replaced 1 belt I would replace the other with the same gates belt as you did the first.