Print-Quality - is this what one can expect?

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Tinkerer
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Print-Quality - is this what one can expect?

Postby Tinkerer » Thu Dec 14, 2017 5:12 pm

Hi All.

After replacing the Z-Driver I did a test print again to see whether the print quality is okay.
Please see attached picture and let me know your thoughts.
Is this as good as it gets?

Btw., this is Raise3D PLA at 205°C, Layerheight 0.2mm.

The surface still seems to be a bit uneven to me.

Zyl_Surface_2.jpg


P.S.:
How can one prevent this to happen:
LayerChange.jpg

Looks to me as if that is related to layer change?
But why is it "wandering" around?
Layer start point is set to "Nearest".


Have a great season!
...there's nothing like the smell of fresh ABS in the morning...

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Vicky@Raise3D
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Re: Print-Quality - is this what one can expect?

Postby Vicky@Raise3D » Fri Dec 15, 2017 6:54 am

The surface still looks not such good. And I saw a obvious line approaching to the top. Is it the same height as the height you have problem before?

The second picture is layer start point. Since your model has a continuous regular shape, with nearest layer start point set, the points will be concentrated together.
Try random type, it will break up the layer starter points of each layer.

Tinkerer
Posts: 176
Joined: Mon Oct 09, 2017 8:30 pm
Location: Germany

Re: Print-Quality - is this what one can expect?

Postby Tinkerer » Mon Dec 18, 2017 11:16 pm

Thanks, Vicky.
I also thought this is not really what I expect from this 3D-Printer.

The "problems" arise at several height levels.

Sadly the Raise3D-Support currently focuses on the heating-runaway-problem - which I tried to catch on video.
But as usual - when cameras watch, nothing happens...

What can one do to get rid of the layer stat point in addition to random?
With random I expect to see the start points distributed across the circumference of the object -
which I would not like as well.
...there's nothing like the smell of fresh ABS in the morning...

zemlin
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Re: Print-Quality - is this what one can expect?

Postby zemlin » Tue Dec 19, 2017 1:11 am

The hump at that start point is cumulative if you are running several perimeter outlines. Random helps by starting each perimeter in a different spot so the bulge doesn't get amplified in subsequent layers. You also have loads of retraction settings to experiment with. Spend some time looking at those and experimenting. I normally run with a bit of coast, retraction, and wipe.

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Vicky@Raise3D
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Re: Print-Quality - is this what one can expect?

Postby Vicky@Raise3D » Tue Dec 19, 2017 5:30 am

If the surface problem only happens on thin structures or also on filled structure models? Or thin structures more obvious with this problem?
Which version of ideaMaker are you using for slicing? Any difference between different versions of software?

Layer start point is hard to totally avoid. Sometimes due to oozing, sometimes due to overlapped point of layer start and finish position.

Tinkerer
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Location: Germany

Re: Print-Quality - is this what one can expect?

Postby Tinkerer » Tue Dec 19, 2017 9:55 am

Would it help to increase retraction on layer change?
...there's nothing like the smell of fresh ABS in the morning...

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Vicky@Raise3D
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Re: Print-Quality - is this what one can expect?

Postby Vicky@Raise3D » Wed Dec 20, 2017 9:15 am

Increasing the retraction will benefit some. But ideaMaker only has overall retraction. If you increase the retraction amount, it may affect the printing quality of the other structures on model.

Tinkerer
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Location: Germany

Re: Print-Quality - is this what one can expect?

Postby Tinkerer » Wed Dec 20, 2017 9:58 pm

So what would be the effect to "the other structures"?

I mean, print quality is bad with my N2 as of now.
Way too many issues.
Frustrating.

Btw., the problem is not less when printing objects which are filled:
ZylSurf3.jpg
...there's nothing like the smell of fresh ABS in the morning...

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Vicky@Raise3D
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Re: Print-Quality - is this what one can expect?

Postby Vicky@Raise3D » Fri Dec 22, 2017 8:26 am

If retraction too much, you may find not enough extrusion when restart.

We have already seen you help tickets in our support system. We will help make contact with the distributor to help solve the problems of your machine together.

Tinkerer
Posts: 176
Joined: Mon Oct 09, 2017 8:30 pm
Location: Germany

Re: Print-Quality - is this what one can expect?

Postby Tinkerer » Fri Dec 22, 2017 1:37 pm

Thanks, Vicky.
...there's nothing like the smell of fresh ABS in the morning...


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