diff --git a/src/dactyl_keyboard/dactyl.clj b/src/dactyl_keyboard/dactyl.clj
index c01975e..25da24b 100644
--- a/src/dactyl_keyboard/dactyl.clj
+++ b/src/dactyl_keyboard/dactyl.clj
@@ -168,10 +168,14 @@
                       cap-top-height))
 (def column-x-delta (+ -1 (- (* column-radius (Math/sin β)))))
 
+(defn offset-for-column [col]
+  (cond
+    (= col lastcol) 20
+    :else  0))
 (defn apply-key-geometry [translate-fn rotate-x-fn rotate-y-fn column row shape]
   (let [column-angle (* β (- centercol column))
         placed-shape (->> shape
-                          (translate-fn [0 0 (- row-radius)])
+                          (translate-fn [(offset-for-column column) 0 (- row-radius)])
                           (rotate-x-fn  (* α (- centerrow row)))
                           (translate-fn [0 0 row-radius])
                           (translate-fn [0 0 (- column-radius)])
@@ -258,6 +262,12 @@
 (def web-post-bl (translate [(+ (/ mount-width -2) post-adj) (+ (/ mount-height -2) post-adj) 0] web-post))
 (def web-post-br (translate [(- (/ mount-width 2) post-adj) (+ (/ mount-height -2) post-adj) 0] web-post))
 
+; wide posts for 1.5u keys in the main cluster
+(def wide-post-tr (translate [(- (/ mount-width 0.81) post-adj)  (- (/ mount-height  2) post-adj) 0] web-post))
+(def wide-post-tl (translate [(+ (/ mount-width -0.81) post-adj) (- (/ mount-height  2) post-adj) 0] web-post))
+(def wide-post-bl (translate [(+ (/ mount-width -0.81) post-adj) (+ (/ mount-height -2) post-adj) 0] web-post))
+(def wide-post-br (translate [(- (/ mount-width 0.81) post-adj)  (+ (/ mount-height -2) post-adj) 0] web-post))
+
 (defn triangle-hulls [& shapes]
   (apply union
          (map (partial apply hull)
@@ -496,8 +506,8 @@
    ; back wall
    (for [x (range 0 ncols)] (key-wall-brace x 0 0 1 web-post-tl x       0 0 1 web-post-tr))
    (for [x (range 1 ncols)] (key-wall-brace x 0 0 1 web-post-tl (dec x) 0 0 1 web-post-tr))
-   (key-wall-brace lastcol 0 0 1 web-post-tr lastcol 0 1 0 web-post-tr)
    ; right wall
+   (key-wall-brace lastcol 0 0 1 web-post-tr lastcol 0 1 0 web-post-tr)
    (for [y (range 0 lastrow)] (key-wall-brace lastcol y 1 0 web-post-tr lastcol y       1 0 web-post-br))
    (for [y (range 1 lastrow)] (key-wall-brace lastcol (dec y) 1 0 web-post-br lastcol y 1 0 web-post-tr))
    (key-wall-brace lastcol cornerrow 0 -1 web-post-br lastcol cornerrow 1 0 web-post-br)
@@ -515,7 +525,6 @@
    (wall-brace (partial key-place 0 0) 0 1 web-post-tl (partial left-key-place 0 1) 0 1 web-post)
    (wall-brace (partial left-key-place 0 1) 0 1 web-post (partial left-key-place 0 1) -1 0 web-post)
    ; front wall
-   (key-wall-brace lastcol 0 0 1 web-post-tr lastcol 0 1 0 web-post-tr)
    (key-wall-brace 3 lastrow   0 -1 web-post-bl 3 lastrow 0.5 -1 web-post-br)
    (key-wall-brace 3 lastrow 0.5 -1 web-post-br 4 cornerrow 0.5 -1 web-post-bl)
    (for [x (range 4 ncols)] (key-wall-brace x cornerrow 0 -1 web-post-bl x       cornerrow 0 -1 web-post-br)) ; TODO fix extra wall