Combination for customisable heat tower and tower with bridges.
Just open SCAD file, modify labels you want have there and export it to stl with OpenSCAD.
To change temps, you can use something like this in slic3r, in priter settings, custom GCODE, After layer change:
{if layer_z==0.06}
M104 S190
M109 S190
{endif}
{if layer_z==5}
M104 S195
M109 S195
{endif}
{if layer_z==10}
M104 S200
M109 S200
{endif}
{if layer_z==15}
M104 S205
M109 S205
{endif}
{if layer_z==20}
M104 S210
M109 S210
{endif}
{if layer_z==25}
M104 S215
M109 S215
{endif}
{if layer_z==30}
M104 S220
M109 S220
{endif}
UPDATE 2019-05-10: changed order from lower temp to higher and added M109 commands to wait for temp to be set
The author hasn't provided the model origin yet.