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nic6911

Z-axis blocks on start of print Cura 13.06.4

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Posted · Z-axis blocks on start of print Cura 13.06.4

Hi. I have been using the older versions of cura for my printing without any issues.

But i recently updated to the new version 13.06.4.

This gives me an issue when the print starts.

BTW I have a Prusa i3.

The z-axis will home and then lift 15mm from the platform. In the older versions this was done at a reasonable speed, but in the new this is done by 20 times the speed, resulting in the steppers not moving at all.

I can still use the older versions of Cura.

The line in the gcode that does the damage is this:

G1 Z15.0 F2400 ;move the platform down 15mm

In the older versions of Cura that line would be for example:

G1 Z15.0 F120 ;move the platform down 15mm

So F120 just became F2400 resulting in the loss of steps.

I have googled and also did a search on z-axis in this forum without any result.

How do I fix this problem?

Regards Nic

 

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Posted · Z-axis blocks on start of print Cura 13.06.4

You can simply change the start gcode in Cura to make it do it at whatever speed you want to.

You may also be able to set a speed limit in your firmware, so that any move speeds are capped, and the printer doesn't try to move faster than it can.

 

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Posted · Z-axis blocks on start of print Cura 13.06.4

I believe this is on the start/end gcode tab in cura settings.

 

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Posted · Z-axis blocks on start of print Cura 13.06.4

Aha! I have never used that tab in the previous versions. I can see it now, thank's guys!

 

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Posted · Z-axis blocks on start of print Cura 13.06.4

(Back after 2 weeks vacation)

 

Note, the newer CuraEngine assumes that the firmware will limit the Z speed. I highly recommend configuring your firmware so that the Z speed is limited to what your machine can handle. As it will also do Z moves at high speed.

 

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