Parametric Spacers

stl/spacer.scad

@@ -0,0 +1,15 @@
+width = 7;       // Overall width
+spacerD = 8.5;   // Diameter of spacer
+spacerW = 2;     // Width of spacer
+bearing = 6;     // Internal Diameter of bearing
+bolt = 3;        // Diameter of bolt
+
+$fn=100;         // set number of faces
+
+difference () {
+    union() {
+        cylinder(r=spacerD/2, h=spacerW);
+        cylinder(r=bearing/2, h=width);
+    }
+    translate([0,0,-1]) cylinder(r=bolt/2, h=width+2);
+}

stl/spacer_feeder.scad

@@ -0,0 +1,19 @@
+width = 19;         // Overall width
+spacerD = 17.5;     // Diameter of spacer
+spacerW = 9;        // Width of spacer
+feeder = 10;        // Internal Diameter of feeder
+keyW = 3;           // Width of inside key
+keyH = 1.5;         // Height of inside key
+spindle = 5;        // Diameter of spindle
+
+$fn=100;            // set number of faces
+
+difference () {
+    union() {
+        cylinder(r=spacerD/2, h=spacerW);
+        cylinder(r=feeder/2, h=width);
+    }
+    translate([0,0,-1]) cylinder(r=spindle/2, h=width+2);
+}
+translate([(feeder/2)-keyH,-(keyW/2),0]) cube([keyH*2,keyW,width]);
+translate([2,-(spindle/2),0]) cube([2,spindle,width]);