1 Topic by Bms85

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Topic: First layer is flawless but second layers are "squished"

Hello EVeryone, I'm sure this has been brought up quite a few times in the past but I couldn't find specifically how to deal with the second layer and above. I just got my Solidoodle 3 yesterday and am still working on my first print.

As the title sates, my first layer drops great and I have no problems sticking to my glass (I upgraded first). I calibrated my zaxis and gave a once over of the settings. however, every layer thereafter appears to be putting out too much ABS. The nozzle is squishing it around. After the previous layer dries the nozzle is dragged over it making a washboard sound. Am I missing a setting somewhere that  will correct this?

2 Reply by muddtt (edited by muddtt 2013-11-06 20:40:37)

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Re: First layer is flawless but second layers are "squished"

www.soliwiki.com/#Calibrations

Calibrate extrusion stepper and then flow rate. See if that helps.

3 Reply by Bms85

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Re: First layer is flawless but second layers are "squished"

muddtt wrote:

Calibrate extrusion stepper and then flow rate. See if that helps.

Thanks! I'm working on it now.

4 Reply by Bms85

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Re: First layer is flawless but second layers are "squished"

Hmm... My firmware version appears to be newer than the one they're offering to download and my EEPROM settings are blank...

I ran the test. I'm definitely extruding too much. (an extra 30mm for every 100mm). Since I don't have the default steps from my firmware, it is hard to find a base for my adjustment calculations. I'm going to use the 138 steps from the base as a best guess and just drop the adjustments in my gcode.

5 Reply by muddtt (edited by muddtt 2013-11-06 22:44:10)

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Re: First layer is flawless but second layers are "squished"

If your using repetier host just go under (config-> firmware eeprom config) in the menu. You can change the values there. THe box you want to change is the top right most. Steps per mm->E:

6 Reply by Bms85 (edited by Bms85 2013-11-06 22:52:17)

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Re: First layer is flawless but second layers are "squished"

muddtt wrote:

If your using repetier host just go under (config-> firmware eeprom config) in the menu. You can change the values there. THe box you want to change is the top right most. Steps per mm->E:

Thanks, I'll have a look when it's done printing my test Yoda. I think 138 was a good base for my calculations. I'm on layer 60 and it's already at a better quality than the parts Solidoodle shipped it with! I'd call that a success. Now if only I could get my PC drivers to work....

7 Reply by Bms85

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Re: First layer is flawless but second layers are "squished"

I do have a new set of problems revolving around extrusion. while printing the extruder fan from thingverse, the skinny vertical part went haywire. It appeared to be extruding too much for the size and squishing it all over.  The rest printed pretty good. Is there a setting that makes more come out for the skinny sections?

http://i.imgur.com/qjCTIFbl.jpg

http://i.imgur.com/iZ4o4v9l.jpg

8 Reply by muddtt

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Re: First layer is flawless but second layers are "squished"

Were the corners lifting forom the bed? Sometimes that squishes layers.

Or

It was printing to fast not giving the previous layers time to cool. It makes it all jelly like and out of whack cause the layers start to not go down right. There is a cooling setting in slicer to slow things down when a layer is to fast.