From 8d8827de6c97a4471fa844aac18cfb1639e674fc Mon Sep 17 00:00:00 2001
From: Ruud Swinkels <ruudswinkels@hotmail.nl>
Date: Wed, 11 Jan 2023 21:33:36 +0100
Subject: [PATCH 1/7] refactor rounded cuboids/planes

---
 gridfinity-rebuilt-baseplate.scad | 11 +++++++++--
 gridfinity-rebuilt-lite.scad      |  4 ++--
 gridfinity-rebuilt-utility.scad   | 28 ++++++++++++++++++----------
 gridfinity-spiral-vase.scad       | 12 ++++++------
 4 files changed, 35 insertions(+), 20 deletions(-)

diff --git a/gridfinity-rebuilt-baseplate.scad b/gridfinity-rebuilt-baseplate.scad
index 871165a..b9a46ce 100644
--- a/gridfinity-rebuilt-baseplate.scad
+++ b/gridfinity-rebuilt-baseplate.scad
@@ -74,12 +74,12 @@ module gridfinityBaseplate(gridx, gridy, length, dix, diy, sp, sm, sh) {
     difference() {
         translate([0,0,h_base])
         mirror([0,0,1])
-        rounded_rectangle(dx, dy, h_base+off, r_base);
+        rounded_rectangular_cuboid(dx, dy, h_base+off, r_base);
         
         gridfinityBase(gx, gy, length, 1, 1, 0, 0.5, false);
         
         translate([0,0,h_base-0.6])
-        rounded_rectangle(dx*2, dy*2, h_base*2, r_base);
+        rounded_rectangular_cuboid(dx*2, dy*2, h_base*2, r_base);
         
         pattern_linear(gx, gy, length) {
             if (sm) block_base_hole(1);
@@ -161,6 +161,13 @@ module profile_skeleton() {
     }
 }
 
+module profile_skeleton_minimal() {
+    l = length - 6;
+    offset(r_fo3)
+    offset(-r_fo3) 
+    square([l,l], center = true);
+}
+
 module cutter_screw_together(gx, gy, off) {
 
     screw(gx, gy);
diff --git a/gridfinity-rebuilt-lite.scad b/gridfinity-rebuilt-lite.scad
index b3f9e86..f6208bd 100644
--- a/gridfinity-rebuilt-lite.scad
+++ b/gridfinity-rebuilt-lite.scad
@@ -78,10 +78,10 @@ module gridfinityLite(gridx, gridy, gridz, gridz_define, enable_lip, enable_zsna
                         cube([gridx*length,gridy*length,1000]);
                     }
                     translate([0,0,-1])
-                    rounded_rectangle(gridx*length-0.5005-d_wall*2, gridy*length-0.5005-d_wall*2, 1000, r_f2);
+                    rounded_rectangular_cuboid(gridx*length-0.5005-d_wall*2, gridy*length-0.5005-d_wall*2, 1000, r_f2);
                 }
                 translate([0,0,h_base+d_clear])
-                rounded_rectangle(gridx*length-0.5005-d_wall*2, gridy*length-0.5005-d_wall*2, h_base, r_f2);
+                rounded_rectangular_cuboid(gridx*length-0.5005-d_wall*2, gridy*length-0.5005-d_wall*2, h_base, r_f2);
             }
 
             translate([0,0,-4*h_base])
diff --git a/gridfinity-rebuilt-utility.scad b/gridfinity-rebuilt-utility.scad
index f104225..216cccf 100644
--- a/gridfinity-rebuilt-utility.scad
+++ b/gridfinity-rebuilt-utility.scad
@@ -90,12 +90,12 @@ module gridfinityBase(gx, gy, l, dx, dy, style_hole, off=0, final_cut=true) {
     
     if (final_cut)
     translate([0,0,h_base])
-    rounded_rectangle(xx+0.002, yy+0.002, h_bot/1.5, r_fo1/2+0.001);
+    rounded_rectangular_cuboid(xx+0.002, yy+0.002, h_bot/1.5, r_fo1/2+0.001);
 
     intersection(){
         if (final_cut) 
         translate([0,0,-1])
-        rounded_rectangle(xx+0.005, yy+0.005, h_base+h_bot/2*10, r_fo1/2+0.001);
+        rounded_rectangular_cuboid(xx+0.005, yy+0.005, h_base+h_bot/2*10, r_fo1/2+0.001);
         
         render()
         difference() {
@@ -117,14 +117,14 @@ module block_base_solid(dbnx, dbny, l, o) {
     mirror([0,0,1])
     union() {
         hull() {
-            rounded_rectangle(xx-2*r_c2-2*r_c1+o, yy-2*r_c2-2*r_c1+o, h_base+oo, r_fo3/2);
-            rounded_rectangle(xx-2*r_c2+o, yy-2*r_c2+o, h_base-r_c1+oo, r_fo2/2);
+            rounded_rectangular_cuboid(xx-2*r_c2-2*r_c1+o, yy-2*r_c2-2*r_c1+o, h_base+oo, r_fo3/2);
+            rounded_rectangular_cuboid(xx-2*r_c2+o, yy-2*r_c2+o, h_base-r_c1+oo, r_fo2/2);
         }
         translate([0,0,oo])
         hull() {
-            rounded_rectangle(xx-2*r_c2+o, yy-2*r_c2+o, r_c2, r_fo2/2);
+            rounded_rectangular_cuboid(xx-2*r_c2+o, yy-2*r_c2+o, r_c2, r_fo2/2);
             mirror([0,0,1])
-            rounded_rectangle(xx+o, yy+o, h_bot/2+abs(10*o), r_fo1/2);
+            rounded_rectangular_cuboid(xx+o, yy+o, h_bot/2+abs(10*o), r_fo1/2);
         }
     }
 }
@@ -201,7 +201,7 @@ module block_wall(gx, gy, l) {
 
 module block_bottom( h = 2.2, gx, gy, l ) {
     translate([0,0,h_base+0.1])
-    rounded_rectangle(gx*l-0.5-d_wall/4, gy*l-0.5-d_wall/4, h, r_base+0.01);
+    rounded_rectangular_cuboid(gx*l-0.5-d_wall/4, gy*l-0.5-d_wall/4, h, r_base+0.01);
 }
 
 module cut_move_unsafe(x, y, w, h) {
@@ -389,15 +389,23 @@ module profile_cutter_tab(h, tab, ang) {
 
 function clp(x,a,b) = min(max(x,a),b);
 
-module rounded_rectangle(length, width, height, rad) {
+module rounded_rectangular_cuboid(length, width, height, rad) {
     linear_extrude(height)
+    rounded_rectangle(length, width, rad);
+}
+
+module rounded_cube(length, height, rad) {
+    rounded_rectangular_cuboid(length, length, height, rad);
+}
+
+module rounded_rectangle(length, width, rad){
     offset(rad) 
     offset(-rad) 
     square([length,width], center = true);
 }
 
-module rounded_square(length, height, rad) {
-    rounded_rectangle(length, length, height, rad);
+module rounded_square(length, rad){
+    rounded_rectangle(length,length,rad);
 }
 
 module copy_mirror(vec=[0,1,0]) {
diff --git a/gridfinity-spiral-vase.scad b/gridfinity-spiral-vase.scad
index e1f5fca..f1a4121 100644
--- a/gridfinity-spiral-vase.scad
+++ b/gridfinity-spiral-vase.scad
@@ -157,7 +157,7 @@ module gridfinityBaseVase() {
         intersection() {
             block_base_blank(0);
             translate([0,0,-h_base-1])
-            rounded_rectangle(length-0.5-0.005, length-0.5-0.005, h_base*10, r_fo1/2+0.001);
+            rounded_rectangular_cuboid(length-0.5-0.005, length-0.5-0.005, h_base*10, r_fo1/2+0.001);
         }
         translate([0,0,0.01])
         difference() {
@@ -211,13 +211,13 @@ module block_magnet_blank(o = 0, half = true) {
 module block_base_blank(o = 0) {
     mirror([0,0,1]) {
         hull() {
-            rounded_square(length-o-0.05-2*r_c2-2*r_c1, h_base, r_fo3/2);
-            rounded_square(length-o-0.05-2*r_c2, h_base-r_c1, r_fo2/2);
+            rounded_cube(length-o-0.05-2*r_c2-2*r_c1, h_base, r_fo3/2);
+            rounded_cube(length-o-0.05-2*r_c2, h_base-r_c1, r_fo2/2);
         }
         hull() {
-            rounded_square(length-o-0.05-2*r_c2, r_c2, r_fo2/2);
+            rounded_cube(length-o-0.05-2*r_c2, r_c2, r_fo2/2);
             mirror([0,0,1])
-            rounded_square(length-o-0.05, d_bottom, r_fo1/2);
+            rounded_cube(length-o-0.05, d_bottom, r_fo1/2);
         }
     }
 }
@@ -515,7 +515,7 @@ module transform_scoop() {
 
 module block_vase(h = d_height*2) {
     translate([0,0,-0.1])
-    rounded_rectangle(gridx*length-0.5-nozzle, gridy*length-0.5-nozzle, h, r_base+0.01-nozzle/2);
+    rounded_rectangular_cuboid(gridx*length-0.5-nozzle, gridy*length-0.5-nozzle, h, r_base+0.01-nozzle/2);
 }
 
 module profile_x(x_f = 3) {

From 7ec3f30ffe6805e22462e3e60c54eae567806a3c Mon Sep 17 00:00:00 2001
From: Ruud Swinkels <ruudswinkels@hotmail.nl>
Date: Wed, 11 Jan 2023 21:44:13 +0100
Subject: [PATCH 2/7] add baseplate screw together minimal

---
 gridfinity-rebuilt-baseplate.scad | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/gridfinity-rebuilt-baseplate.scad b/gridfinity-rebuilt-baseplate.scad
index b9a46ce..d82af7c 100644
--- a/gridfinity-rebuilt-baseplate.scad
+++ b/gridfinity-rebuilt-baseplate.scad
@@ -42,7 +42,7 @@ distancey = 0;
 /* [Styles] */
 
 // baseplate styles
-style_plate = 3; // [0: thin, 1:weighted, 2:skeletonized, 3: screw together]
+style_plate = 3; // [0: thin, 1:weighted, 2:skeletonized, 3: screw together, 4: screw together minimal]
 
 // enable magnet hole
 enable_magnet = true; 
@@ -91,6 +91,10 @@ module gridfinityBaseplate(gridx, gridy, length, dix, diy, sp, sm, sh) {
                 linear_extrude(10*(h_base+off), center = true)
                 profile_skeleton();
             }
+            else if (sp == 4) {
+                linear_extrude(10*(h_base+off), center = true)
+                profile_skeleton_minimal();
+            }
             
             translate([0,0,-off]) { 
                 if (sh == 1) cutter_countersink();
@@ -163,9 +167,7 @@ module profile_skeleton() {
 
 module profile_skeleton_minimal() {
     l = length - 6;
-    offset(r_fo3)
-    offset(-r_fo3) 
-    square([l,l], center = true);
+    rounded_square(l,r_fo3);
 }
 
 module cutter_screw_together(gx, gy, off) {

From 8dcb2077b9f78ecfc48c6eaae3f225bd042e7ef8 Mon Sep 17 00:00:00 2001
From: Ruud Swinkels <ruudswinkels@hotmail.nl>
Date: Wed, 11 Jan 2023 21:53:24 +0100
Subject: [PATCH 3/7] add screwholes to minimal base skeleton

---
 gridfinity-rebuilt-baseplate.scad | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gridfinity-rebuilt-baseplate.scad b/gridfinity-rebuilt-baseplate.scad
index d82af7c..4f5fb6a 100644
--- a/gridfinity-rebuilt-baseplate.scad
+++ b/gridfinity-rebuilt-baseplate.scad
@@ -101,7 +101,7 @@ module gridfinityBaseplate(gridx, gridy, length, dix, diy, sp, sm, sh) {
                 else if (sh == 2) cutter_counterbore();
             }
         }
-        if (sp == 3) cutter_screw_together(gx, gy, off);    
+        if (sp == 3 || sp ==4) cutter_screw_together(gx, gy, off);    
     }
 
 }

From 2297e3af36f4a9b874c666f9bb4c1cbc3f7b6bd1 Mon Sep 17 00:00:00 2001
From: Ruud Swinkels <ruudswinkels@hotmail.nl>
Date: Mon, 13 Feb 2023 11:52:11 +0100
Subject: [PATCH 4/7] Revert "refactor rounded cuboids/planes"

This reverts commit 8d8827de6c97a4471fa844aac18cfb1639e674fc.
---
 gridfinity-rebuilt-baseplate.scad |  4 ++--
 gridfinity-rebuilt-lite.scad      |  4 ++--
 gridfinity-rebuilt-utility.scad   | 28 ++++++++++------------------
 gridfinity-spiral-vase.scad       | 12 ++++++------
 4 files changed, 20 insertions(+), 28 deletions(-)

diff --git a/gridfinity-rebuilt-baseplate.scad b/gridfinity-rebuilt-baseplate.scad
index 4f5fb6a..165194b 100644
--- a/gridfinity-rebuilt-baseplate.scad
+++ b/gridfinity-rebuilt-baseplate.scad
@@ -74,12 +74,12 @@ module gridfinityBaseplate(gridx, gridy, length, dix, diy, sp, sm, sh) {
     difference() {
         translate([0,0,h_base])
         mirror([0,0,1])
-        rounded_rectangular_cuboid(dx, dy, h_base+off, r_base);
+        rounded_rectangle(dx, dy, h_base+off, r_base);
         
         gridfinityBase(gx, gy, length, 1, 1, 0, 0.5, false);
         
         translate([0,0,h_base-0.6])
-        rounded_rectangular_cuboid(dx*2, dy*2, h_base*2, r_base);
+        rounded_rectangle(dx*2, dy*2, h_base*2, r_base);
         
         pattern_linear(gx, gy, length) {
             if (sm) block_base_hole(1);
diff --git a/gridfinity-rebuilt-lite.scad b/gridfinity-rebuilt-lite.scad
index f6208bd..b3f9e86 100644
--- a/gridfinity-rebuilt-lite.scad
+++ b/gridfinity-rebuilt-lite.scad
@@ -78,10 +78,10 @@ module gridfinityLite(gridx, gridy, gridz, gridz_define, enable_lip, enable_zsna
                         cube([gridx*length,gridy*length,1000]);
                     }
                     translate([0,0,-1])
-                    rounded_rectangular_cuboid(gridx*length-0.5005-d_wall*2, gridy*length-0.5005-d_wall*2, 1000, r_f2);
+                    rounded_rectangle(gridx*length-0.5005-d_wall*2, gridy*length-0.5005-d_wall*2, 1000, r_f2);
                 }
                 translate([0,0,h_base+d_clear])
-                rounded_rectangular_cuboid(gridx*length-0.5005-d_wall*2, gridy*length-0.5005-d_wall*2, h_base, r_f2);
+                rounded_rectangle(gridx*length-0.5005-d_wall*2, gridy*length-0.5005-d_wall*2, h_base, r_f2);
             }
 
             translate([0,0,-4*h_base])
diff --git a/gridfinity-rebuilt-utility.scad b/gridfinity-rebuilt-utility.scad
index 216cccf..f104225 100644
--- a/gridfinity-rebuilt-utility.scad
+++ b/gridfinity-rebuilt-utility.scad
@@ -90,12 +90,12 @@ module gridfinityBase(gx, gy, l, dx, dy, style_hole, off=0, final_cut=true) {
     
     if (final_cut)
     translate([0,0,h_base])
-    rounded_rectangular_cuboid(xx+0.002, yy+0.002, h_bot/1.5, r_fo1/2+0.001);
+    rounded_rectangle(xx+0.002, yy+0.002, h_bot/1.5, r_fo1/2+0.001);
 
     intersection(){
         if (final_cut) 
         translate([0,0,-1])
-        rounded_rectangular_cuboid(xx+0.005, yy+0.005, h_base+h_bot/2*10, r_fo1/2+0.001);
+        rounded_rectangle(xx+0.005, yy+0.005, h_base+h_bot/2*10, r_fo1/2+0.001);
         
         render()
         difference() {
@@ -117,14 +117,14 @@ module block_base_solid(dbnx, dbny, l, o) {
     mirror([0,0,1])
     union() {
         hull() {
-            rounded_rectangular_cuboid(xx-2*r_c2-2*r_c1+o, yy-2*r_c2-2*r_c1+o, h_base+oo, r_fo3/2);
-            rounded_rectangular_cuboid(xx-2*r_c2+o, yy-2*r_c2+o, h_base-r_c1+oo, r_fo2/2);
+            rounded_rectangle(xx-2*r_c2-2*r_c1+o, yy-2*r_c2-2*r_c1+o, h_base+oo, r_fo3/2);
+            rounded_rectangle(xx-2*r_c2+o, yy-2*r_c2+o, h_base-r_c1+oo, r_fo2/2);
         }
         translate([0,0,oo])
         hull() {
-            rounded_rectangular_cuboid(xx-2*r_c2+o, yy-2*r_c2+o, r_c2, r_fo2/2);
+            rounded_rectangle(xx-2*r_c2+o, yy-2*r_c2+o, r_c2, r_fo2/2);
             mirror([0,0,1])
-            rounded_rectangular_cuboid(xx+o, yy+o, h_bot/2+abs(10*o), r_fo1/2);
+            rounded_rectangle(xx+o, yy+o, h_bot/2+abs(10*o), r_fo1/2);
         }
     }
 }
@@ -201,7 +201,7 @@ module block_wall(gx, gy, l) {
 
 module block_bottom( h = 2.2, gx, gy, l ) {
     translate([0,0,h_base+0.1])
-    rounded_rectangular_cuboid(gx*l-0.5-d_wall/4, gy*l-0.5-d_wall/4, h, r_base+0.01);
+    rounded_rectangle(gx*l-0.5-d_wall/4, gy*l-0.5-d_wall/4, h, r_base+0.01);
 }
 
 module cut_move_unsafe(x, y, w, h) {
@@ -389,23 +389,15 @@ module profile_cutter_tab(h, tab, ang) {
 
 function clp(x,a,b) = min(max(x,a),b);
 
-module rounded_rectangular_cuboid(length, width, height, rad) {
+module rounded_rectangle(length, width, height, rad) {
     linear_extrude(height)
-    rounded_rectangle(length, width, rad);
-}
-
-module rounded_cube(length, height, rad) {
-    rounded_rectangular_cuboid(length, length, height, rad);
-}
-
-module rounded_rectangle(length, width, rad){
     offset(rad) 
     offset(-rad) 
     square([length,width], center = true);
 }
 
-module rounded_square(length, rad){
-    rounded_rectangle(length,length,rad);
+module rounded_square(length, height, rad) {
+    rounded_rectangle(length, length, height, rad);
 }
 
 module copy_mirror(vec=[0,1,0]) {
diff --git a/gridfinity-spiral-vase.scad b/gridfinity-spiral-vase.scad
index f1a4121..e1f5fca 100644
--- a/gridfinity-spiral-vase.scad
+++ b/gridfinity-spiral-vase.scad
@@ -157,7 +157,7 @@ module gridfinityBaseVase() {
         intersection() {
             block_base_blank(0);
             translate([0,0,-h_base-1])
-            rounded_rectangular_cuboid(length-0.5-0.005, length-0.5-0.005, h_base*10, r_fo1/2+0.001);
+            rounded_rectangle(length-0.5-0.005, length-0.5-0.005, h_base*10, r_fo1/2+0.001);
         }
         translate([0,0,0.01])
         difference() {
@@ -211,13 +211,13 @@ module block_magnet_blank(o = 0, half = true) {
 module block_base_blank(o = 0) {
     mirror([0,0,1]) {
         hull() {
-            rounded_cube(length-o-0.05-2*r_c2-2*r_c1, h_base, r_fo3/2);
-            rounded_cube(length-o-0.05-2*r_c2, h_base-r_c1, r_fo2/2);
+            rounded_square(length-o-0.05-2*r_c2-2*r_c1, h_base, r_fo3/2);
+            rounded_square(length-o-0.05-2*r_c2, h_base-r_c1, r_fo2/2);
         }
         hull() {
-            rounded_cube(length-o-0.05-2*r_c2, r_c2, r_fo2/2);
+            rounded_square(length-o-0.05-2*r_c2, r_c2, r_fo2/2);
             mirror([0,0,1])
-            rounded_cube(length-o-0.05, d_bottom, r_fo1/2);
+            rounded_square(length-o-0.05, d_bottom, r_fo1/2);
         }
     }
 }
@@ -515,7 +515,7 @@ module transform_scoop() {
 
 module block_vase(h = d_height*2) {
     translate([0,0,-0.1])
-    rounded_rectangular_cuboid(gridx*length-0.5-nozzle, gridy*length-0.5-nozzle, h, r_base+0.01-nozzle/2);
+    rounded_rectangle(gridx*length-0.5-nozzle, gridy*length-0.5-nozzle, h, r_base+0.01-nozzle/2);
 }
 
 module profile_x(x_f = 3) {

From 46feb59b0d20fadb8fe88c00abda457c8c233aef Mon Sep 17 00:00:00 2001
From: Ruud Swinkels <ruudswinkels@hotmail.nl>
Date: Mon, 13 Feb 2023 13:54:56 +0100
Subject: [PATCH 5/7] remove need of extra module

---
 gridfinity-rebuilt-baseplate.scad | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/gridfinity-rebuilt-baseplate.scad b/gridfinity-rebuilt-baseplate.scad
index 165194b..b6d3546 100644
--- a/gridfinity-rebuilt-baseplate.scad
+++ b/gridfinity-rebuilt-baseplate.scad
@@ -92,8 +92,8 @@ module gridfinityBaseplate(gridx, gridy, length, dix, diy, sp, sm, sh) {
                 profile_skeleton();
             }
             else if (sp == 4) {
-                linear_extrude(10*(h_base+off), center = true)
-                profile_skeleton_minimal();
+                translate([0,0,-off - 0.001])
+                rounded_square(length-6, off + 0.002, r_fo3);
             }
             
             translate([0,0,-off]) { 
@@ -165,11 +165,6 @@ module profile_skeleton() {
     }
 }
 
-module profile_skeleton_minimal() {
-    l = length - 6;
-    rounded_square(l,r_fo3);
-}
-
 module cutter_screw_together(gx, gy, off) {
 
     screw(gx, gy);

From 6ad4204c100e613db6fb7c33da7e92349ecfd609 Mon Sep 17 00:00:00 2001
From: Ruud Swinkels <ruudswinkels@hotmail.nl>
Date: Wed, 15 Feb 2023 15:49:37 +0100
Subject: [PATCH 6/7] remove magic number

---
 gridfinity-rebuilt-baseplate.scad | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gridfinity-rebuilt-baseplate.scad b/gridfinity-rebuilt-baseplate.scad
index b6d3546..d7986d8 100644
--- a/gridfinity-rebuilt-baseplate.scad
+++ b/gridfinity-rebuilt-baseplate.scad
@@ -92,8 +92,9 @@ module gridfinityBaseplate(gridx, gridy, length, dix, diy, sp, sm, sh) {
                 profile_skeleton();
             }
             else if (sp == 4) {
+                l = length-2*r_c2-2*r_c1; 
                 translate([0,0,-off - 0.001])
-                rounded_square(length-6, off + 0.002, r_fo3);
+                rounded_square(l, off + 0.002, r_fo3);
             }
             
             translate([0,0,-off]) { 

From 19a1504006595241d36a0c687fd32eb27c53e760 Mon Sep 17 00:00:00 2001
From: K Hodson <khodsonms@gmail.com>
Date: Wed, 15 Feb 2023 10:04:34 -0700
Subject: [PATCH 7/7] code formatting

---
 gridfinity-rebuilt-baseplate.scad | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/gridfinity-rebuilt-baseplate.scad b/gridfinity-rebuilt-baseplate.scad
index d7986d8..344d9a8 100644
--- a/gridfinity-rebuilt-baseplate.scad
+++ b/gridfinity-rebuilt-baseplate.scad
@@ -42,7 +42,7 @@ distancey = 0;
 /* [Styles] */
 
 // baseplate styles
-style_plate = 3; // [0: thin, 1:weighted, 2:skeletonized, 3: screw together, 4: screw together minimal]
+style_plate = 0; // [0: thin, 1:weighted, 2:skeletonized, 3: screw together, 4: screw together minimal]
 
 // enable magnet hole
 enable_magnet = true; 
@@ -87,15 +87,12 @@ module gridfinityBaseplate(gridx, gridy, length, dix, diy, sp, sm, sh) {
             if (sp == 1)
                 translate([0,0,-off])
                 cutter_weight();
-            else if (sp == 2 || sp == 3) {
+            else if (sp == 2 || sp == 3) 
                 linear_extrude(10*(h_base+off), center = true)
                 profile_skeleton();
-            }
-            else if (sp == 4) {
-                l = length-2*r_c2-2*r_c1; 
-                translate([0,0,-off - 0.001])
-                rounded_square(l, off + 0.002, r_fo3);
-            }
+            else if (sp == 4) 
+                translate([0,0,-5*(h_base+off)])
+                rounded_square(length-2*r_c2-2*r_c1, 10*(h_base+off), r_fo3);
             
             translate([0,0,-off]) { 
                 if (sh == 1) cutter_countersink();