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Poor Base Layer and Print

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Hello,

I am fairly new to using my Ultimaker2. I have had some successful prints, but mostly get poor prints (both attached). I have tried printing the same design without changing any settings and have very different outcomes. I have tried leveling the plate, heating the nozzle to 220C for the first layer, all the no avail! Does anyone have any advice to get better prints everytime.

On this most recent print, I aborted the print during the brim because ti wasn't coming out circular like it should (attached). Any and all suggestions would be greatly appreciated.

I have only posted a few examples, but I generally have more bad prints than good prints...

Print Speed: 40 mm/sec

Layer (Bad prints): .1 and .2 mm

Layer (Good Print): .06 mm (only worked sometimes)

Nozzle Temp: 220C for first layer, then down to 215C or 210C for longer prints

Buildplate: 70C for first layer then down to 65C

BadPrintBadShroudGoodDrive

 

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