idler_bearing = bearing_624_double;
+//Select carriage lenght
+// 30 for single carriage extruder (two holes 30mm apart)
+// 50 for wade or single with fan (three holes, 30-20)
+// 80 for full length carriage (four holes, 30-20-30)
+
+carriage_l_base = 80;
+
// Fillets ********************************************************************
// mostly cosmetic, except z axis.
// 0 = no fillets