Centralized slop setting, and improved slop calibration model.

config.scad

@@ -5,7 +5,6 @@ platform_length = 110; // mm.  Must be a multiple of rack_tooth_size.
 platform_width  = 150; // mm
 platform_height =  40; // mm
 platform_thick  =   7; // mm
-rack_tooth_size =   5; // mm per tooth.
 
 rail_length  = 150;    // mm
 rail_height  =  50;    // mm
@@ -21,7 +20,11 @@ roller_angle =  30;    // degrees
 
 joiner_angle =  30;    // degrees
 joiner_width =  10;    // mm
-joiner_slop  =   0.5;  // mm
+
+rack_tooth_size  =  5; // mm per tooth.
+set_screw_size   =  3; // mm size of set screw in drive gears, couplers, etc
+motor_shaft_size =  5; // mm
+motor_shaft_flatted = false;  // boolean
 
 // Currently configured for 3/8" ACME threaded rod and matching 11/16" nut
 lifter_rod_diam   =   9.5; // mm
@@ -30,6 +33,10 @@ lifter_nut_size   =  17.4; // mm
 lifter_nut_thick  =   9.3; // mm
 lifter_thread_size =  3.175; // mm lift per revolution
 
+// This is the slop needed to make parts fit more exactly, and may be
+// printer dependant.  Printing a slop calibration plate should help
+// dial this setting in for your printer.
+printer_slop =   0.25; // mm