-// 624 [roughly same diameter as pulley, makes belt parallel so its prettier]
-bearing_624 = [16, 5, 4, 1];
-// two 624 - for use without bearing guides
-bearing_624_double = [16, 10, 4, 0];
+//608 bearings with fender washers. Not good at all, the belt brushes against the carriage
+bearing_608_washers = [22, 10, 8, 0];
+// one 625 with guides
+bearing_625 = [16, 5, 5, 1];
+// two 625 - for use without bearing guides.
+bearing_625_double = [16, 10, 5, 0];
+
+// those two here are really good:
+bearing_624_double = [13, 9, 4, 0];
+// this one has roughly same diameter as pulley, makes belt parallel so its prettier
+bearing_623_double = [10, 8, 3, 0];