cura vs slic3r with almost the same settings

Hi, here I am again
After almost 1kg of spent filament, trying to achieve better and better prints, today I gave slic3r a try and got better results on parts dimensions.
I'm using an Hephestos, 0.4mm nozzle diam. 1.75mm filament

Printing with 0.2 layer height for test purposes:

Slic3r 19x19x7 hollow cube (similar to this: [www.dropbox.com] ) with 2mm wall
I got 19.08x19.11x7.13 and 2.10mm wall

However using Cura, with the same cube
I get 19.22x19.39x7.14 and 2.43mm wall

I cannot get Cura to print as good as slic3r (X and Y dimensions), why ?
Why I cannot get cura to print a 2mm wall correctly ?
Two problems :
1) incorrect wall thickness on printed parts
2) Incorrect X and Y printed part dimension

My cura settings:
0.2 layer height = first layer height
100% first layer width
1.2mm shell thickness
0.6mm top/bottom thickness

slic3r:
0.2 layer height
0.3 first layer height
Vertical Shells:
3 perimeters (minimum)
Horizontal Shells
5 Top solid layers ; 3 Bottom Solid layers

What is making slic3r print the parts with correct dimensions and cura not?


thanks again

Edited 3 time(s). Last edit at 05/05/2015 10:01PM by Carlcox89.

the problem is the extrusion width... Slicr does it automatically so the parts are accurate.. For cura you need to play around with to get it right..

i found that cura width setting should match the nozzle ie 0.4 nozzle 0.4 width, so i e 1.2 mm perimeter would give me 3 where as slicer i can say i want 3 perimeters

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Quote
chris33
i found that cura width setting should match the nozzle ie 0.4 nozzle 0.4 width, so i e 1.2 mm perimeter would give me 3 where as slicer i can say i want 3 perimeters

I too have 1.2 on shell thickness, only thing different i have is the width, i cannot seem to find where to set it to 0.4 (I can only find first line width)

i can't either i just assumed that trying to print either wider than nozzle or thinner just complicates things, because i print in slicer with 0.4 nozzle 0.4 layer height but cura doesn't like 0.4 it comes up a side note when trying 0.3 lower i prefer cura though faster slicer better quality prints

---

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up and running
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Quote
chris33
i can't either i just assumed that trying to print either wider than nozzle or thinner just complicates things, because i print in slicer with 0.4 nozzle 0.4 layer height but cura doesn't like 0.4 it comes up a side note when trying 0.3 lower i prefer cura though faster slicer better quality prints

So , you're using cura...what errors on dimensions are you getting?
are you able to print a 2mm wall and it prints 2mm not >2.10 ?
Can you share your settings?

i can share settings tomorrow away from the printer at the moment

---

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@chris33
you should not be printing with a layer height more than 80% of the nozzle diameter.. max layer height with .4 nozzle is 0.25.....

Quote
ekaggrat
@chris33
you should not be printing with a layer height more than 80% of the nozzle diameter.. max layer height with .4 nozzle is 0.25.....

80% of .4mm is .32mm...
I have a .4mm tip and print .3 all the time without issues.

well i don't like the 0.05 bit i'd rather round it to a zero so .3 .2 .1 im not interested in doing finer prints because my stuff i want from my printer more mechanical than a nice vase or something eye appealing so until i upgrade my printer to ultimaker

---

Check my rubbish blog for my prusa i3

up and running
[3dimetech.blogspot.co.uk]

I mainly do .2mm prints with my .4mm tip. I use .3mm for faster prints on simple geometry.

oh and another reason i don't do .005 cause error

---

Check my rubbish blog for my prusa i3

up and running
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