parts break from the built base

[Produktdesigner 1]

Hello,

I have some bigger parts to built. The infil is about 20 %.

After a while the parts are breaking from the built base because the print head scraps over the infil of shape.

How could I change the settings that the problem is solved.

[gr5 898]

Could you show a photo?  is this PLA?  Are the raised portions that the nozzle hits at the edge of overhangs?  If all this is true then try to increase fan if possible, decrease nozzle temp by 5 to 10C and slow things down.  I can explain why if it's PLA and happening on overhangs.d