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Z stepper stops randomly

My Z stepper stops randomly during a print as well as when I home it. Some times it will home and other times it stops at different points while it is homing. I have had many problems with this machine. when it prints it is great. but it has been down more than up working. I have not long ago replaced the Mother board and had just started to print again when the short USB cable inside failed. 

Fixed that and now this. I am now just out of warranty and this is now happening. Is there a way to check if it is the motherboard that I just replaced or the Z stepper? I am hoping that it is the Z stepper as it is not as expensive as the motherboard.

The most likely culprit is the cable / connectors to the z stepper. Look closely for a loose or broken wire.


I have checked the wires, All are OK . But I have went through and found that when I am moving it up and down with software it will  catch at about the same area every time and as I move it more it catch's more often so I think there is a dead spot forming in that area of the decoder on the stepper. Which means I need to replace the Z stepper motor.

What type of stepper is the Z stepper on the Leapfrog Creatr?

Dear Michael Moore ,

The Creatr printer uses a Nema 17 stepper motor for the Z movement. I would also suggest checking the grub screws on the spindle pulleys and make sure they are tight and that the stepper motor does not spin freely;

Also you could invert the X motor and the Z motor connectors on the motherboard and see if the X stepper motor will present the same problems when connected in place of the Z motor. If it does then the root cause is the driver on the board.

If not indeed the root cause might be the Z motor and the wire harness.

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User Manual

Quick Start Guide

Print Settings

Print settings in the Creatr Software can be directly updated in under 'print'.

The latest Simplify 3D profiles can be downloaded using the following links:

Bolt - Simplify3D settings

Bolt - Sync and Mirror Profile
Bolt - PLA, ABS Flex Profile
Bolt - Flex Profile V.1.1
Bolt - PolyPropylene Profile

Bolt Pro - Simplify3D settings

Bolt Pro - V1.1 - PLA, EPLA, Hybrid, PET-G Profile
Bolt Pro - V1.1 - Flex Profile
Bolt Pro - V1.1 - ABS Nylon Profile
Bolt Pro - V1.1 - PolyPropylene Profile
Bolt Pro - V1.1 - SS(0.5mm) Carbon, Wood Profile

To use the profiles, choose File, then Import FFF Profile and be sure to select the correct profile in your process. You can also watch this video.

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Request more information on the Bolt (Pro) firmware and how to update this via the Ticket System

Bolt Firmware

Download the Bolt 2.8.2 firmware here

Bolt Pro Firmware

Download the Bolt Pro 2.8.2 firmware here

Bolt (Pro) Video Library