Problem printing circles

deckingman

@obeliks Did you ever try lower acceleration for your Y axis as someone suggested? I note that the motor currents are set to 800mA so presumably the motors are rated at 1Amp? If your bed weight 1.5kg, the Y motor might be struggling so either try lower acceleration, increase the current if you can, or a bigger motor.

OBELIKS

I actually just ordered Wantai 42BYGHM810
It was on my to do list, so...
Then I just need 24V power supply and Anet A8 will be no more.

My motors are rated 1680mA, not sure if that is correct. And I had them running, at 1400mA and the circles were not great. But they heated up over 80°C So I stopped that.

And at the moment I am printing a puzzle box for a gift, it has mostly straight lines, so the circles are not a problem.

OBELIKS

So, with Wantai motors the circles are circles. So either the stepper for X or Y was bad or the 0,9° vs 1,8° makes the difference. Or it was something else that I did not see and was fixed on reassembly. But I did that before the stepper change and there was no difference.
Motors are also quieter and cooler (both around 5 down).

The only thing left is to figure out what to do with the old electronics and steppers. I might need another printer.

Q: What AWG wires do I need for the steppers? I will need to clean the wiring now.

wilriker

@obeliks said in Problem printing circles:

Q: What AWG wires do I need for the steppers? I will need to clean the wiring now.

I started rewiring now and will use 0.5mm² or 20 AWG for the wiring of my steppers. But you have to get wires with rather thin insulation to still fit into the Molex KK crimps. I use LiYY 4x0.5mm² cable for this.

dc42

20awg is rather thick. I suggest 22 awg, or 24awg for lower current motors.

OBELIKS

I have 2.4A motors, so 22AWG?

dc42

Yes, 22awg is suitable.

wilriker

@dc42 Is there any reason not to use 20AWG except for the stiffness of the cable if it needs to move?

OBELIKS

@dc42 thank you

dc42

20awg should be OK, the crimp pins we supply are intended for 20 to 24awg.