by9876
1
Hi i’m new to 3d printing and I have got myself a purse i3 kit. Ive set everything up and levelled the bed but no matter what I try I can’t get the printer to do a proper print. I’m using pronterface, and have tried slicing in slic3r and also the inbuilt slicing in pronterface. As you can see in the photo I get shifting in layers (not mechanical, checked everything there), and the extruder nozzle starts to drag in the molten plastic pool. The printer also seems to just stop of its own accord and won’t restart until you pause it and then resume the print. Does anyone have any ideas?
First of all if you make small part always make two and seperate them from each other so it got time to cool down
Seconde check the temperature and fan speed and decrease temp with 5 clelsius
It looks like to me that the nozzle is to hot for the plastic. Maybe it pauses to avoid damaging the hotend? What plastic are you using and at what temp?
1 Like
Xasin
4
Alright, I think I know what might be the problem.
The stepper motor drivers might not supply the motors with enough power! This would cause both the shifting axis without mechanical hints, as the motors simply fail to move, but also things like nozzle dragging (as the Z-Axis does not move properly), and also the stopping, as the motors may just simply shut down alltogether as the PSU lowers its voltage a tiny bit.
You can VERY clearly hear the effects of this when moving the Z-Axis along longer distances; the motors will stop moving altogether and instead you will hear a terrible and very audible noise, as if a gear was blocked.
To adjust the stepper motor driver current, check this out!
You might also want to ensure that you have ALL Steps/mm as well as the Maximum speed settings for the Z-Axis right.
You can use this calculator to figure out the right steps/mm values. As for the maximum speed of the Z-Axis, you can experiment, however 3 mm/s should be a good value.
About the stopping and starting, check the pronterface communcations output!
Usually if the printer stops intentionally, it will post a noticable error message. It could be a Mintep/Maxtemp error, but there are other things that might also cause problems.
Also make sure that the PSU is fully functional and can supply +12V at at least 7A. A normal ATX PSU is more than sufficient to run your printer!
