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Involuntary retraction


jdddog

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Posted · Involuntary retraction

Hi

I'm using an Ultimaker Original and using the Pause at Z plugin to stop the print so that I can insert nuts into a print. I want the plugin to perform an extrusion before starting to print a layer so that the filament comes out cleanly. The issue I'm having is that if I do any kind of extrusion, just before printing the first layer after pausing, the Ultimaker does a huge retraction, defeating the purpose of doing the extrusion in the first place!

Here's some example code:

 

f.write(";TYPE:CUSTOM\n")				f.write("M83\n") #Set to relative modenewZ = z + moveZf.write("G1 Z%f F300\n" % (newZ))				f.write("G4 P%s000\n" % (str(parkDuration))) #Pause for the desired number of seconds								f.write("G1 E5 F200\n")				f.write("G1 X%f Y%f Z%f F300\n" % (x, y, z))f.write("M82\n")

 

If I remove this line: f.write("G1 E5 F200\n"), then the Ultimaker wont do a retraction before starting the next layer. If its there, it will extrude and then when the next layer starts it will do a retraction.

Retraction is off in the print settings.

Anyone have any idea why this would be?

Thanks for your help

Jamie

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