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ecflam

Bottom layers of model not bonding - solved

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Hi I am a newbie to 3D printing, just got an ultimaker 2 and has been experimenting with it.

I found that the few layers of my models constantly are not bonding together are strands are coming off. This is true for models with or without overhangs.

I searched different forums but I could not solve this issue. I have attached the top and bottom image of the model. The top looks great. But the bottom has strands coming out.

Top: http://lavandespa.com/images/temp/top_print.jpg

Bottom: http://lavandespa.com/images/temp/bottom_print.jpg

Here are my settings:

nozzle temp: 230

bed temp: 60

print speed: 35

retraction length: 5.5

retraction speed: 35

layer height: 0.1 or 0.2 (0.1 gives slightly better result for overhangs)

Fill bottom/top thickness: 0.6

Fill density: 20%

Support type: touching plate

Adhesion type: raft or brim (same issue with either)

Cool:

min layer time: 5

Enable cool fan: ON

Fan full on at height: 5mm

Cool head lift: ON

Infill: 15%

Please let me know how I can improve the print. Thanks.

 

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