Cura Initial Layer Over Extruding

[Waternut13134 1]

Hi all, I just got my UM3 yesterday and love it,However I am getting way over extrusion on my first layer. Is there a setting in cura that I can mess with the multiplier for the first layer? Ive always used S3D so im brand new to Cura and learning it as I go. Right now im messing with the flow settings but I know that will mess up the model after the first layer. Thanks for any help.

[eldrick 64]

You could:

- In Cura 15, there is a setting Advanced/Initial Layer Line Width, which can do what you are suggesting, by reducing extrusion on the first layer.

- Chamfer the bottom edges of the model, i.e. a slight undercut to compensate and give a nice smooth edge instead of a sharp edge around the bottom.

- Lower the build platform slightly - try 1/8 turn of each leveling screw,

Edited November 26, 2016 by Guest

[Waternut13134 1]

You could:

- In Cura 15, there is a setting Advanced/Initial Layer Line Width, which can do what you are suggesting, by reducing extrusion on the first layer.

- Chamfer the bottom edges of the model, i.e. a slight undercut to compensate and give a nice smooth edge instead of a sharp edge around the bottom.

- Lower the build platform slightly - try 1/8 turn of each leveling screw,

 

Thanks for the tip. Im using Cura 2.3.1 which I got off of UM site, I cant seem to find the Advance Initial Line Width. I even tried searching for it and I can only see Initial Line Speed. Am I missing something? Thanks

[zerspaner_gerd 361]

Cura 15.xx.xx does not work with the Ultimaker 3.

This setting where you are looking for is not yet available at Cura 2.3.

I hope this is added.

[Waternut13134 1]

Cura 15.xx.xx does not work with the Ultimaker 3.

This setting where you are looking for is not yet available at Cura 2.3.

I hope this is added.

 

Ahh,that makes sense. I went through every setting. Thanks for the help,yea I hope this is added soon.

[peggyb 169]

in Cura 2.3.1 there is the 'initial layer height' that is set to 0.3 mm by default. Maybe this is too much for you if your nozzle is close to the bed.

If a setting you're looking for is not there, you can add them to the list on you're right hand: preference -> settings. Or look at help -> online documentation for all the tips and guides for Cura.

[timosam 0]

I have written a very crude python script which offsets all z values in a gcode by a certain amount (0.3mm). for me that was enough to get going. if someone needs it:

https://github.com/timsamart/gcodeZoffset

no guarantees though just a quick solution.

[ahoeben 1,760]

Wouldn't it be easier to relevel your bed with more distance between the nozzle and the bed, eg with a (thicker) piece of paper between the bed and nozzle?