// when z pause occurs
// * set feed rate to 10% (or whatever minimum is)
// * press knob, printer will start
-// * quickly select "stop"
+// * quickly, press again, select "stop"
// * set temp
// * set feed rate back to 100%
-// * now change filament etc.
+// * now change filament etc., start next file
include <utils.scad>
tower_pos =
-0.5 * frame_inner
+ noz_gap * [1,0] * (phases - phase)
- + -[1,1] * tower_w;
+ + -[1,0] * tower_w + 0.5 * [0,-1] * frame_w;
// frame for alignment
linear_extrude(height= th_l0)