I was hoping that someone could tell me how to create an open type box in creality 5.1.
Also I wanted to know about drilling a blind hole, I get drill failed.
I eventually worked it out and went back to correct my post Disappeared ???
The method I eventually used in both cases was to add a negative part. That is create the box and then a negative box slightly smaller (wall size) where I wanted it. You cant seem to combine these in the prepare view. Slice it and then it happens.
The same procedure can be used for a blind hole, just add a negative cylinder of the required size