jeroent

Hi guys, 
 
I ran into the same issue; wanting to print one-at-a-time and finish the parts from the front of the buildplate to the back. 
 
At first i also noticed that cura 5.5.0 randomized the printing order, often choosing the objects in the back first. 
I tried messing around with upload-order, last-moved-order, offsetting the parts left and right of each other. all to no avail.
 
Then i noticed it preferred to print the part which has no overlap with the toolhead-dimensions of the other part (the gray square indicating the X+, X-, Y+ and Y- dimensions of the head).
In my case my head has more overhang on the front than back, thus causing it to prefer to print the back parts first. 
 
So i found this workaround: 
Since i want to order my parts front to back, the only Head-dimension that counts is the Y+ so the head does not collide with the printed part in front of it.
 
i set the dimension Y- to the size of my Y-axis. 
This causes the head-dimensions gray area behind the part to always be overlapping the next part, since it will not print the part in the area gray first and since all parts behind the first part are in the gray area, it will print the front part first. and it will do this for every subsequent part. 
As long as there is a side of the part that is not overlapping a gray area ( so in this case in front of the part you want printed last) , the slicer can slice it. 
 
This principle should also work to determine a order in X.
 
I hope this makes sense and can help some of you to find some order in this madness 😄