Missing spot

Discussion of the Ultimaker Original and Ultimaker Original + (kit and pre-assembled) printers
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LePaul
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Missing spot

Post by LePaul » October 31st, 2016, 9:24 pm

I wonder why this print on my UMO keeps missing this one lone spot.
IMG_4592.JPG

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Dim3nsioneer
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Re: Missing spot

Post by Dim3nsioneer » November 1st, 2016, 2:48 am

Seems to me to be a combination of back lash and slight underextrusion. Check the overlap settings of your slicer. Cura?

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Re: Missing spot

Post by LePaul » November 1st, 2016, 9:02 am

Yeah Cura 2.3.0
Default settings minus the retraction length, speed, print head temp and bed temp

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Re: Missing spot

Post by LePaul » November 1st, 2016, 10:27 am

Here what it is, by default in Cura 2.3.0

Again, interesting that it was only that one spot
overlap.JPG
overlap.JPG (15.69 KiB) Viewed 1275 times

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Dim3nsioneer
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Re: Missing spot

Post by Dim3nsioneer » November 1st, 2016, 3:14 pm

No coasting, right?

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Re: Missing spot

Post by Neotko » November 1st, 2016, 3:22 pm

Just to be sure. Can you check that x/y shafts (the thin ones that move the head) are perfectly square? Just in case.

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Re: Missing spot

Post by LePaul » November 1st, 2016, 3:30 pm

Coasting was on

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Re: Missing spot

Post by Dim3nsioneer » November 2nd, 2016, 10:18 am

And was this a coasting spot?

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Re: Missing spot

Post by LePaul » November 2nd, 2016, 10:24 am

How would I determine that? Is that the green color?

Here's a layer 1 screenshot with coasting on
rib.JPG

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Re: Missing spot

Post by Dim3nsioneer » November 2nd, 2016, 5:48 pm

Repetier host and gcode.ws show the difference between print and travel moves.

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Re: Missing spot

Post by LePaul » November 2nd, 2016, 10:39 pm

Well I have no idea what those programs are...so I remain stumped :)

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Re: Missing spot

Post by Dim3nsioneer » November 3rd, 2016, 1:58 am

LePaul wrote:Well I have no idea what those programs are...so I remain stumped :)
Oh, yes, my bad. They are gcode viewers:
https://www.repetier.com/
http://gcode.ws/

If only someone could invent something like a search engine for the internet... :mrgreen:

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drayson
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Re: Missing spot

Post by drayson » November 3rd, 2016, 2:30 am

... or a search engine for gcode - a possibility to just view travel or print moves could help too... maybe as a plugin? ;-)

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Re: Missing spot

Post by MTVDNA » November 3rd, 2016, 3:14 am

You can also open gcode files with Simplify3D. The view will probably not work with feature types but at least you should be able to see the difference between travel moves and regular moves if you set the coloring to movement speed.

In my experience the interface of S3D is much nicer to work with than repetier host, and gcode.ws runs really slowly in comparison.

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Re: Missing spot

Post by Neotko » November 3rd, 2016, 3:15 am

You could just use your s3d to see the gcode. Coasting shows as no green and just travel move.

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