It must be intresting if we can add text to our model.fortunately,QIDISlicer provide us the choice to make that to be true.
We can click 'Advanced' button pointed out above,then we can see a more detailed emboss dialog.
There are some description about part of it.
If Use surface option get selected,the text would fit snugly on the surface,otherwise they would not bent anyway.
Chat gap option represent the distance of every single letter.
The following figure shows the comparison of 3d text in different char gap cases.
(The upper one is set to 1083 points,the lower one is set to 0 points)
Modifing rotation parameter,we can easily change the orientation of 3d text.