1 Topic by wagnmkr

  • wagnmkr
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Topic: Too Many Nubins

As the title says, I did a print that has way too many nubbins/artifacts/bumpy bits.

Wanhao Duplicator I3 Plus
Cura Slicer
Brand new roll of PLA, opened for this project.
Bed 60, Head 225
Retract at !.5
Print speed at 25
Layer at .1

I have just changed to a Mark 10 all metal hot end.

The first prints I did with the all metal were just fine. All I had to do was adjust the bed slightly.

I am wondering if the nubblies are from not being sliced properly? Head too hot ... too cold?

Anyone have any ideas?

Tom

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I was cut out to be rich ... but ... I was sewn up all wrong!
Wanhao Duplicator I3 Plus with glass bed, MK10 All Metal Hot End

2 Reply by Kronikabuse

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Re: Too Many Nubins

Looks like you need to work on your retraction settings

Sd4 #9080 with a glass bed. E3d chimera duel extruder. Paste extruder , duet wifi.
Lawsy carriages. linear bearings. Y axis direct drive, Kinect scanner
SD4#8188 glass bed, lawsly carriages, E3d v6, octoprint http://www.ustream.tv/channel/hotrod96z28
Filastruder/filawinder, Custom Delta 300mm x 600mm

3 Reply by wagnmkr

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Re: Too Many Nubins

Thanks. I will try a bit less and see what happens.

I was cut out to be rich ... but ... I was sewn up all wrong!
Wanhao Duplicator I3 Plus with glass bed, MK10 All Metal Hot End

4 Reply by heartless

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Re: Too Many Nubins

225 is a bit much for PLA, too. you might try lowering that temp a fair amount - like to 210 or so.

I run PLA at 200C through E3D hotends

SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1

5 Reply by wagnmkr

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Re: Too Many Nubins

Thanks Heartless ... I must not have had enough coffee yet as my fingers didn't type what the brain told them to ... 217 was the actual temp, but I have cut that down to 210 on the reprint (printing now).

I was cut out to be rich ... but ... I was sewn up all wrong!
Wanhao Duplicator I3 Plus with glass bed, MK10 All Metal Hot End

6 Reply by AOYOU3D

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Re: Too Many Nubins

For your ref.:

I use a HTCTOP's Prusa mendel i3 printer to make some PLA models very well,
the settings are that printing speed: 30mm/s, layer height: 0.3mm, infill: 50%,
temp. (for PLA): 210/55 C., slicer: Cura.

http://soliforum.com/i/?5n9biud.jpg

7 Reply by wagnmkr

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Re: Too Many Nubins

Thank You AOYOU3D, that is good information.

I was cut out to be rich ... but ... I was sewn up all wrong!
Wanhao Duplicator I3 Plus with glass bed, MK10 All Metal Hot End

8 Reply by Heartlander

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Re: Too Many Nubins

Wagnmkr, perhaps you've seen this. It is a quick easy way to get some ideas on print quality problems.

https://www.simplify3d.com/support/prin … eshooting/

Robox printer, HICTOP (Prusa i3 variant) Model 3DP17 printer, ELEK 2.5W laser engraver, AutoDesk 123D Design, Windows 10

Heartlander's Website

9 Reply by wagnmkr

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Re: Too Many Nubins

Heartlander, I had seen that before but forgot about it because I don't use that program. I see now, by a quick read, that I should have paid more attention as a lot of answers are there.

Thanks for the link, I appreciate it.

I was cut out to be rich ... but ... I was sewn up all wrong!
Wanhao Duplicator I3 Plus with glass bed, MK10 All Metal Hot End

10 Reply by heartless

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Re: Too Many Nubins

you dont have to use S3D to find the troubleshooting guide useful. wink

SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1

11 Reply by wagnmkr (edited by wagnmkr 2016-10-22 08:55:07)

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Re: Too Many Nubins

Heartless, I do understand that now, but when I first saw that I figured it only applied to that program. (I was a total newb then .. couldn't even spell 3d printer!)

So, I used some of the info to make some changes and I am fairly pleased with the results. I did a test piece and I think it looks much better. I moved all the way back to 205c for the head and put retraction back to 4.5 (I had cut it way back for some PETG I was using). I am going to reprint the other piece this morning and see how it looks.

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I was cut out to be rich ... but ... I was sewn up all wrong!
Wanhao Duplicator I3 Plus with glass bed, MK10 All Metal Hot End

12 Reply by xt

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Re: Too Many Nubins

You may need to set a "coast" value to not extrude as you approach the next layer.  In S3D, the optimal is to apply a coast value of around .2 to .3 and a "extra restart distance" of around -.20 (note negative value) to retract slightly to eliminate blobs.  After doing that, most of the ugly blobs went away.   You can also apply a wipe operation on the nozzle too.