diff --git a/box.scad b/box.scad
index 9d7e0cb..9eaec28 100644
--- a/box.scad
+++ b/box.scad
@@ -84,17 +84,18 @@ module profile(ps=PROFILE_SIZE, wl=WIN_LIP, wt=WIN_THICK, wtr=WIN_TRIM, fl=FLOOR
 	polygon(gon);
 }
 
-module box_edge(ps=PROFILE_SIZE, l=10, orient=ORIENT_Z, jh = JOINER_H,jw = JOINER_W, jb=5, jup = false, jdown=false, flx=false, wx=true, wt=WIN_THICK, tubepass=false, align=V_CENTER) {
+module box_edge(ps=PROFILE_SIZE, l=10, orient=ORIENT_Z, jh = JOINER_H,jw = JOINER_W, jb=5, jup = false, jdown=false, flx=false, wl=WIN_LIP,  wx=true, wt=WIN_THICK, wtr = WIN_TRIM, tubepass=false, align=V_CENTER) {
 	joiner_off = ps/2 + wt - jb/sqrt(2);
+	jzoff = l/2-jw/2;
 	orient_and_align([ps,ps,l], orient=orient, align=align, orig_orient=ORIENT_Z) left(ps/2) fwd(ps/2) {
 		difference() {
 			linear_extrude(height=l, center=true)
 				profile(flx=flx, fly=true, wx=wx, wy=true);
-			if (jup) up(l/2-jw/2)back(joiner_off)right(joiner_off)zrot(45)boxjoiner_clear(orient=ORIENT_Y_90, align=V_CENTER);
-			if (jdown) down(l/2-jw/2)back(joiner_off)right(joiner_off)zrot(45)boxjoiner_clear(orient=ORIENT_Y_90, align=V_CENTER);
-			if (tubepass) zspread(l=l/2) right(6+2+WIN_LIP/2)pc4M10_clear(orient=ORIENT_Y,align=V_BACK);
+			if (jup) up(jzoff)back(joiner_off)right(joiner_off)zrot(45)boxjoiner_clear(orient=ORIENT_Y_90, align=V_CENTER);
+			if (jdown) down(jzoff)back(joiner_off)right(joiner_off)zrot(45)boxjoiner_clear(orient=ORIENT_Y_90, align=V_CENTER);
+			if (tubepass) zspread(l=l/2) right(6+2+wl/2)pc4M10_clear(orient=ORIENT_Y,align=V_BACK);
 		}
-		if (tubepass) zspread(l=l/2) right(6+2+WIN_LIP/2)pc4M10(orient=ORIENT_Y,align=V_BACK);
+		if (tubepass) zspread(l=l/2) right(wtr+wt+wl/2)pc4M10(orient=ORIENT_Y,align=V_BACK);
 		if (jup) up(l/2 - jw/2)back(joiner_off)right(joiner_off)zrot(45)boxjoiner(orient=ORIENT_Y_90, align=V_CENTER);
 		if (jdown) down(l/2 - jw/2)back(joiner_off)right(joiner_off)zrot(45)xrot(180)boxjoiner(orient=ORIENT_Y_90, align=V_CENTER);
 	}
@@ -153,8 +154,10 @@ module boxjoiner_clear(inset=5, slop=.01, jh=JOINER_H, jw=JOINER_W, align=V_FRON
 
 if (PART == "corner") 
 	box_corner();
-if (PART == "edge") 
-	xrot(90) zrot(45) box_edge(l=140, jup=true, jdown=true, flx=true, wx=false, tubepass=true);
+if (PART == "edge") {
+	xbeam = BOX_X - 2 * PROFILE_SIZE;
+	xrot(90) zrot(0) box_edge(l=xbeam/3, jup=true, jdown=true, flx=true, wx=false, tubepass=true, orient=ORIENT_Z);
+}
 if (PART == "all_corners")
 	box_all_corners(ex=30);
 if (PART == "simple_box") {