This is the tower that i downloaded from the remix source, but when i went to re-download it the source had changed the file. I really liked the original version because it compares how speed impacts bridging and overhang as well as overall print quality.
I would put this into your Slicer (i use Cura) and start the speed change at the following layers or the bottom of the number, this will allow the over hang to be completely printed at the correct speed. I printed with 5% infill but it can be done with 0%. Check out the settings to make it work properly.
Layers and speed for Cura @ .2mm layer height. Further instructions are in the print settings of this post. total tower height was 440 layers.
1 - 40 = 50 mm/s
41 - 80 = 55 mm/s
81 - 120 = 60 mm/s
121 - 160 = 65 mm/s
161 - 200 = 70 mm/s
201 - 240 = 75 mm/s
241 - 280 = 80 mm/s
281 - 320 = 85 mm/s
321 - 360 = 90 mm/s
361 - 400 = 95 mm/s
401 - 440 = 100 mm/s
For cura i had to set the print speed to 100 mm/s so when you click on
extensions > post processing > modify Gcode > add a script > change at Z
you change the trigger to "layer no".
type in layer you want the change to happen
check "change speed" (you can just hit "print speed" but "change speed" changes the print and travel speeds so thats what i did)
since your print speed is set to 100 mm/s all you have to do is put in the speed as a % so the speed for layers 1-40 would be 50% (representing 50 mm/s)
- repeat for every change in speed up to 100 mm/s