Top thickness not the same as bottom thickness

[samhenderson27 0]

Hi there,

 

I have searched the forums but not found specifically what I am looking for.

 

I am having trouble with my UM2 not printing the same top thickness the same as the bottom thickness.

 

I have the settings with PLA set as follows:

 

-Layer height =0.1

-Shell thickness = 1.2

-Bottom/top thickness = 0.6

-Fill density = 20

 

It only seems to do one 0.1mm run for the top surface leaving a poor surface finish on top.

 

I am very new to this so please excuse me if there is any obvious issues.

 

 

Any help would be much appreciated.

 

Thanks.

 

[gr5 2,238]

It should do 6 layers. Strange. Can you post the STL file somewhere?

also maybe post a photo. Did you check Cura layer view? Did that also show only one layer?

 

[samhenderson27 0]

Hi there,

Ahh that layer view is a handy tip, thanks. It showers virtually no layer on the top surface.

Here is a link to the .stl file and also a screen shot of the layer view. It is a solid part.

https://www.dropbox.com/sh/sungice2yl1iohi/AAC_z3osnYEfqAxjsdzZRE_Ca?dl=0

Thanks for your help.

 

[samhenderson27 0]

I cant seem to find the right setting to adjust to make the top layer on the curved section become thicker and have more print layers.

https://www.dropbox.com/sh/sungice2yl1iohi/AAC_z3osnYEfqAxjsdzZRE_Ca?dl=0

 

[gr5 2,238]

So the layer view only shows the top 4 or so internal layers so you have to slide down on that layer view control. I sliced your part and got the same 144 layers but when I slide the layer view down all the top surfaces seem to have 6 layers (I had to check many "top" surfaces.

Once you click on the layer slider once you can also use Shift+Up arrow or down arrow.

 

[gr5 2,238]

Maybe you should post a photo of the final print?

To post a pic, go to "galleray" link top left corner of this page, then click "upload" blue button then after uploading edit or start a new post and click "my media" next to the smile icon.

 

[samhenderson27 0]

Ok so maybe I should look at increasing my bottom top thickness? Maybe because of the curve being rather horizontal in the lower stages and the 0.6 thickness is only measured in the Z direction it's leaving little layer height as it moves across/up the curve - if that makes sense?

 

I have added some pics of the print!

 

[gr5 2,238]

This is called "pillowing". You can read about it here. Your fans probably aren't at full power. Go back to cura settings and make sure the fan is at 100% well before this somewhat level area - possibly 1mm? 5mm is the default I believe:

Look at first picture - top left here:

http://support.3dverkstan.se/article/23-a-visual-ultimaker-troubleshooting-guide

 

[samhenderson27 0]

Thanks very much for your help! I have managed now to successfully print the part getting rid of about 90% of the pillowing - just some slight bulges showing in the surface but certainly no holes now.