Z-axis blocks on start of print Cura 13.06.4

[nic6911 0]

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

 

[illuminarti 18]

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.

 

[gr5 2,229]

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

 

[nic6911 0]

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

 

[Daid 306]

(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.