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Corner bumps

Posted by foshon 
Corner bumps
March 06, 2013 05:30PM
I have most of the kinks out of my new printer. One that is hanging me up is these corner bumps. My last print failed becuase one of these cuased the X-axis to skip. My acceleration is set to 2000 and jerk is default Marlin. I printed a 10mm raft to completely eliminate any chance of warping, the failed print did not warp at all. On corners these nubs appear, the filament seems to be pulled inward a bit, raising the corner. Is my extrusion rate a touch to low?

Re: Corner bumps
March 06, 2013 05:41PM
Have you printed the 0.5mm open cube? If you do, you can measure the wall thickness and adjust your extrusion multiplier accordingly if its way out.
Re: Corner bumps
March 06, 2013 06:46PM
I did, it was dead on balls.
Re: Corner bumps
March 07, 2013 06:09AM
Default marlin jerk is quite high. Try a jerk of 10 and an acceleration of 500 and work upwards from there. Also if printing pla use a fan.
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