I bought a Creality CR-X some weeks back. At first it ran really well. Recently though some issues have cropped up that have me stumped, specifically the skipping extruder steppers. For those that don't know the CR-X has two extruder steppers feeding into one nozzle. Out the box it actually working really well but I decided to tinker with things to try and get it even better. Unfortuantely about two weeks ago I noticed the the extruder skip during printing. Not all the time, it seems quite random. Not sure if it started two weeks ago or sooner as I am not always there to listen to it but two weeks ago was when I first noticed it. So I want to go about properly calibrating everything. When I do the 'extrude 100mm of filament' test the results are 97mm for T0 and 101mm for T1. I believe the firmware in this printer is locked by Creality (speak under correction) but I know I can compensate for this using M92 in the start gcode. What I don't know is what the default esteps are for this printer. Google searches suggest using the M503 command but I don't know how to apply this in practice. I would really appreciate some help here. As to other cause for the skipping, I have: - changed the nozzle (1x steel, 2x brass) - tried various filament brands - tried various temperatures (180-210) - tried various feedrates (35 - 60) - tried various layer heights Not sure what else it could be if not the extrusion amount but T0 is under extruding so it can't that. Sometimes they skip on the first layer, sometimes they don't. Sometimes it prints fine for several layers after skipping for a layer or two. Bed levelling is good. Tearing my hair out here. All help appreciated. https://reprap.org/forum/read.php?262,847455,847455#msg-847455 Sat, 07 Mar 2026 23:16:29 -0500 Phorum 5.2.23 https://reprap.org/forum/read.php?262,847455,848881#msg-848881 https://reprap.org/forum/read.php?262,847455,848881#msg-848881
Or maybe heat creep within the hot-end... as heat creeps up the the heat break, filament softens and swells, increasing friction until the extruder can no longer push it out. But you say you have two extruders, and it only happens on one. What's different between the two?]]> frankvdh Printing Sun, 10 Mar 2019 04:51:18 -0400 https://reprap.org/forum/read.php?262,847455,848710#msg-848710 https://reprap.org/forum/read.php?262,847455,848710#msg-848710
I have isolated this to the Extruder 1 stepper motor.

As mentioned before this mostly happen when well into a print. All help appreciated.]]> sfinke Printing Thu, 07 Mar 2019 02:56:13 -0500 https://reprap.org/forum/read.php?262,847455,848672#msg-848672 https://reprap.org/forum/read.php?262,847455,848672#msg-848672 sfinke Printing Wed, 06 Mar 2019 15:32:12 -0500 https://reprap.org/forum/read.php?262,847455,848671#msg-848671 https://reprap.org/forum/read.php?262,847455,848671#msg-848671
I don't know the first thing about adjusting motor current. How do I do this?]]> sfinke Printing Wed, 06 Mar 2019 15:22:36 -0500 https://reprap.org/forum/read.php?262,847455,848257#msg-848257 https://reprap.org/forum/read.php?262,847455,848257#msg-848257 I'm not familiar with creality hardware, but see if you can adjust the motor current. Make sure the z axis doesn't bind and runs very smoothly.]]> imqqmi Printing Thu, 28 Feb 2019 17:59:25 -0500 https://reprap.org/forum/read.php?262,847455,847919#msg-847919 https://reprap.org/forum/read.php?262,847455,847919#msg-847919 MCcarman Printing Mon, 25 Feb 2019 07:21:05 -0500 https://reprap.org/forum/read.php?262,847455,847734#msg-847734 https://reprap.org/forum/read.php?262,847455,847734#msg-847734
You might get lucky and actually get some customer support. Yeah, I know "what ARE you thinking?!". You might get lucky and they can help you.
Check all your screws. A buddy just got a Creality Pro printer. The build quality was not all that great and he had to adjust a lot of screws until it was all solid and square.

DLC]]> dlc60 Printing Fri, 22 Feb 2019 15:18:49 -0500 https://reprap.org/forum/read.php?262,847455,847497#msg-847497 https://reprap.org/forum/read.php?262,847455,847497#msg-847497 sfinke Printing Wed, 20 Feb 2019 09:28:08 -0500 https://reprap.org/forum/read.php?262,847455,847455#msg-847455 https://reprap.org/forum/read.php?262,847455,847455#msg-847455
For those that don't know the CR-X has two extruder steppers feeding into one nozzle. Out the box it actually working really well but I decided to tinker with things to try and get it even better. Unfortuantely about two weeks ago I noticed the the extruder skip during printing. Not all the time, it seems quite random. Not sure if it started two weeks ago or sooner as I am not always there to listen to it but two weeks ago was when I first noticed it. So I want to go about properly calibrating everything.

When I do the 'extrude 100mm of filament' test the results are 97mm for T0 and 101mm for T1. I believe the firmware in this printer is locked by Creality (speak under correction) but I know I can compensate for this using M92 in the start gcode. What I don't know is what the default esteps are for this printer. Google searches suggest using the M503 command but I don't know how to apply this in practice. I would really appreciate some help here.

As to other cause for the skipping, I have:
- changed the nozzle (1x steel, 2x brass)
- tried various filament brands
- tried various temperatures (180-210)
- tried various feedrates (35 - 60)
- tried various layer heights

Not sure what else it could be if not the extrusion amount but T0 is under extruding so it can't that. Sometimes they skip on the first layer, sometimes they don't. Sometimes it prints fine for several layers after skipping for a layer or two. Bed levelling is good. Tearing my hair out here. All help appreciated.]]> sfinke Printing Tue, 19 Feb 2019 19:38:50 -0500