Simplify3D User Forum

Too often a drag mark is left on the part - layer height, density, temp, speed, infill, etc… changes do not make a difference.

Tried different retraction settings - no difference.

Perhaps it’s combination of settings but, sometimes I get excellent prints on similar parts using the same profile. Also tried different locations on bed…

A quick low-quality print is attached showing example - the rapid move that’s doing it (added a blue line next to it to indicate). Photo of part shows the drag marks…

Factory file attached of one run (pay no heed to the 250 temp…)

Any suggestions... Thanks

You might be over-extruding a bit or perhaps you want to add some Z-lift so the nozzle moves at a higher position.

They actually explain these options pretty well at this link: https://www.simplify3d.com/support/prin ... op-surface

I use the guide and recommend it to others, too. Thanks. I fooled with the lift but, somehow didn't consider reducing the multiplier and will try that.

[FOLLOW UP]

Decreasing the extruder multiplier by 5% helped a little and perhaps a tad more would help even more but, the reduction causes more voids at the shell perimeters (outline overlap is set to 40% now to help that part).

I fooled around plenty with vertical lift to say I think (not sure) this is a bug. I say that because looking at the added attached image showing the lift / moves (in red, some are not lifted and it's those that have the drag marks.

Read the link I posted above. Your question is already answered there.
Please note that this vertical lift will only occur when the nozzle is performing a retraction. If you want to ensure that a retraction is taking place for every single move that the printer does, click on the Advanced tab and make sure that “Only retract when crossing open spaces” and “Minimum travel for retraction” are disabled.

Understood and read it. The settings are (and were) correctly implemented. That's partly why I said 'bug ?' It doesn't lift on all retractions and, if it does lift, it promptly lowers nozzle before moving when settings are as shown... Perhaps I'm missing or misreading something...

Look at the right-most move - it raises but promptly lowers to complete move...

Follow up - it was the GD (you know what that means) erratic mouse control on the Mac version!! Every time I set parameters (of any kind) if just touching the mouse, fields near-by the pointer go crazy. There are other posts about this mouse bug on Mac's. I thought it was fixed but, guess not.

Delicately setting fields and nudging the mouse away without touch top surface of mouse when near input field leave setting as desired and I was able to set them as you indicated. It works. Thanks!