ultimaker cura 4.6 starts from the end of the 3D project

[y0ur5h4d0w 0]

hi all! 

 

i'm new in the 3D printing world, i've recently bought a creality ender 3 and before i had an anet a8 v2... when i first used cura to slice my OBJ or STL files for my anet A8 everything was fine, when i loaded the STL on cura with everything set up for the ender 3 and tried to print the file, my printer "started from the end" of the 3D oject, in other words, it literally started to print the last layer instead of making the base where the object would have been later printed on... how can i fix this? the creality ender 3 comes with the "creality slicer powerred by cura" but honestly it doesn't have much options, and the first layer of my printed object that i slice with the creality slicer looks like garbage while the top one looks perfect... wish i could use cura official software... can anyone help me fix this weird "start to print at the end of the item" issue? 

 

thanks so so much!