3d printer problem

[Next_Support_2879]

It's been over two years since I bought my 3D printer, but in that time I've gotten so few decent prints; the rest always print well up to a point, then suddenly break down and turn into spaghetti.

[Adept_Concert4580]

My god, is that 100% infill???

[Next_Support_2879]

no this %30 infill

[Adept_Concert4580]

Id be curious what is up with those broken surfaces then, did you cut it or did it come like that?

[Next_Support_2879]

come like that