Top Layers not solid

Abernus · 2017-02-09T09:08:01.000Z

HI all,

I am hoping someone can give me some suggestions on how to fix this issue. When I do a print the first layer and all other layers go down well, however, when It comes to the top layer there seem to be gaps at the edges as if it’s not connecting to the walls of the print correctly (Picture attached)

I have played with the settings but nothing I do seems to make a difference, also the print bed is leveled correctly. These are the setting used for the print pictured in Simplify 3D:

Layer Height: 0.1200

Top Solid Layers: 3

Bottom Solid Layers: 3

Outline/Perimeter Shells: 3

Infill: 100%

Interior Fill: 100%

Outline Overlap: 55%

Infill Extrusion Width: 100%

Minimum Infill Length: 4.00mm

Print Sparse Infill Every: 1 Layer

Extruder Temp: 210

Bed Temp: 60

Cooling - Layer 1: Fan Speed 0, Layer 3: Fan Speed 100

Print Speed: 1900.0 mm/min

Outline Underspeed: 50%

Solid Infill Underspeed: 80%

Support Structure Underspeed: 80%

x/y Axis Movement Speed: 4200.0 mm/min

z Axis Movement Speed 1200.0 mm/min

Can anyone help me try to figure this out., Thanks

2017-02-09_08.31.40.jpg3840×2160 2.27 MB

wirlybird · 2017-02-09T12:13:47.000Z

Try adding more top layers. Also look at under extrusion.

Perry_1 · 2017-02-09T12:32:11.000Z

Printing too hot

Printing too fast

Increase cooling settings

Increase extrusion multiplier

Look at suggestions here: Print Quality Guide | Simplify3D Software

Abernus · 2017-02-09T13:16:58.000Z

Thanks for the advice. I will try that out. I have increased my extrusion multiplier from 0.90 to 0.94 and see how that goes.

Abernus · 2017-02-09T14:39:09.000Z

I will have a play about with temps, but not sure my print speed is too fast, it’s currently set at 1900.0 mm/min

Perry_1 · 2017-02-10T12:30:22.000Z

Yeah, probably not speed. Measure your filament and enter that into your slicer, and increase your extrusion multiplier.

Timothy0413 · 2017-02-10T15:59:24.000Z

Send me a the link to that STL. I also us S3D I will try printing it and get back to you.

Abernus · 2017-02-11T17:50:49.000Z

After doing a lot of testing I have found another problem. The print bed appears to be slightly warped so this won’t be helping either. I am going to start a new topic for this issue.

However, after dropping the temp by 10c and increasing the extrusion multiplier has helped a lot.

SHoutzager · 2017-02-14T03:26:33.000Z

I would use multiplier of 1.

Abernus · 2017-02-14T08:33:55.000Z

This is the link to the STL file on Thingiverse: Tri Fidget Spinner Toy by 2ROBOTGUY - Thingiverse

Thanks

Timothy0413 · 2017-02-14T15:28:27.000Z

I got this with .2mm layers 2 shells at 25% infill print speed 75mm/second outline underspeed and solid infill underspeed at 45% Printing another now with 3 shells in print preview 3 shels looked like it may leave gaps. These are also printed in ABS just what i had in the printer.

20170214_101711.jpg3264×2448 1.64 MB

Timothy0413 · 2017-02-14T16:01:04.000Z

ok 3 shells didnt change much. I would just suggest lowering print temp up youir extrusion multiplier and maybe check your belt tention. make shure the belts are tight. I took the tension springs off of my Y axis belts and tightened them up. Prints look a lot better now.

Ideenmodelierer · 2017-02-14T20:37:29.000Z

Hi,

layer high is 0.12mm ? => 0,36mm Top layer thickness ? I usually try to have at last a top layer thickness of 0,5mm => setting 4 or 5 layers in your case. Outline overlap seems to be more than enough