Unresolved Help or suggest re first couple layers...

Anyone have any ideas on why this is happening with my prints (see pics).
It is only the first couple layers that have these 'lines' in them. The rest of the print and the tops look much, much better. I tried a few different things. Tried increasing the number of solid layers. Tried upping the infill. Tried switching from Medium to High level.
As you see in the pics, I have having this problem with the packaged blue PLA and a better quality Black PLA.
Using MatterControl with a stock Robo3D R1 (PLA/ABS) with heated bed.

 

That looks like the first layer is just a tiny bit too high, reduce your Z offset by a little.

Disable Automatic print leveling if you're using it.

 

Thanks for the replies! Much appreciated.

I already have the auto print leveling disabled. Allowing the firmware to handle.

Follow up question for when you guys have a minute.
I found where I can edit the Extrusion Width mm or % for the first level. And I will give that a try but first I would like to try the Z offset.

Could one of you please point me in the direction of where I would change this?

I have found a few places that seem like the possibilities:
Slice Settings > Print > Layers/Perimeters > First Layer Height: currently at 0.3
Slice Settings > Printer > General > Z offset: currently at 1

Thank you!

t

 

Thank you all.
I will try it tonight and report back.

 

First layer height is just defining how much material to extrude volumetrically and how high it should lift above the Z offset.

Z offset is the value you want to change. Try reducing that down. Some people have good luck at around 0.7.

Having a higher first layer height + reduced Z offset will put down more material on the first layer causing "Elephants feet" but can greatly improve layer adhesion.

 

My golden solution is to have the first layer height 0.1 higher than you print resolution, i.e. for a print layer resolution of 0.3 I have my first layer at 0.4. Then reduce your Z offset by 0.1 which will squash your first layer on. This should also keep the final height of your object correct.

 

Well no it would be 0.1mm short. But for almost every print that's negligible.

 

You are correct. I was setting the first layer to the same height, 0.3 for 0.3 resolution, and thought I'd be smart by increasing the first layer by 0.1. But the slicer will use that in the total height calculation anyway. What a noob mistake lol.

 

Thanks all for the help.
Over the weekend I tried a bunch of different test prints.
I seemed to get the best result by changing the following:
Slice Settings > Print > Advance > Extrusion width: changing the value from "1" to "105%"