another design

vacuum_pot_larger.scad

@@ -0,0 +1,29 @@
+small_dist = 0.01;
+
+inner_diam = 142;
+wall_thickness = 3;
+outside_diam = inner_diam + 2*wall_thickness;
+height=210;
+
+small_edge_thickness = 1;
+small_edge_width = 0.8 + small_dist;
+small_edge_inner_diam = inner_diam + 2*0.8;
+
+$fn=200;
+
+linear_extrude(wall_thickness)
+circle(r=outside_diam/2);
+
+linear_extrude(height)
+difference(){
+    circle(r=outside_diam/2);
+    circle(r=inner_diam/2);
+}
+
+translate([0, 0, height]) {
+    linear_extrude(small_edge_thickness)
+    difference(){
+        circle(r=small_edge_inner_diam/2+small_edge_width);
+        circle(r=small_edge_inner_diam/2);
+    }
+}