Cleanup and control points documentation

Readme.md

@@ -10,7 +10,11 @@ The box is designed using library [Fin Base](https://github.com/hrobeers/finbase
 
 ![](https://user-images.githubusercontent.com/2812522/105723055-9fd71100-5f26-11eb-8a9e-b892212b240b.jpg)
 
+## Fin profile
 
+Fin profile is defined using bézier 3 points control
+
+![](./res/Control-Points.webp)
 
 ## Kitesurf Fins
 
@@ -20,7 +24,7 @@ The box is designed using library [Fin Base](https://github.com/hrobeers/finbase
 [Understanding Kitesruf fins](https://24-7boardsports.com/understanding-kitesurf-twintip-board-fins/)
 
 
-## Measure models
+### Measure models
 
 Open web app [at](https://0x00019913.github.io/meshy/) and import it to get the volume.
 
@@ -31,6 +35,46 @@ To convert 21037 cubic millimeters (mm³) to deciliters (dl), you can use the co
 Therefore, 21037 cubic millimeters is equivalent to 0.21dl.
 
 
+### Materials 
+
+
+| Volume | Weight | Fiber Load | Résine  |
+| ------ | ------ | ---------- | ------- |
+| 100%   | x1.4   | 60%        | 40%     |
+| 21 cm3 | 29.4g  | 17.64 g    | 11.76 g |
+
+
+## Surf fin 10 inch
+
+
+| Volume | Weight | Fiber Load | Résine  |
+| ------ | ------ | ---------- | ------- |
+| 100%   | x1.4   | 60%        | 40%     |
+| 207 cm3 | 290g  | 174 g      | 116 g   |
+
+#### Pin
+
+The pin slides into a groove in the US Box fin slot, allowing the fin to move forward or backward to adjust the fin's position for different conditions or board feel.
+
+US Box require a pin of diameter 4.76mm (3/16 inch) per L 14.28 mm (9/16inch) 
+
+### Screw
+
+The screw for securing single fins is often 10-32 x ¾” (or 5mm x 19mm).
+It's usually a slotted screw designed to go through the fin and into the square plate.
+
+
+- Stainless Steel Longboard Fin Screw & Plate 
+- [3/6Pcs Stainless Steel Surfboard Fin Screw M4 Surf](https://www.aliexpress.com/item/1005005128486923.html)  R$30.39
+- [Copper Pin for 6.5/8/9/9.5/10/12 Inch Surf Fin SUP Fin Water Sports](https://www.aliexpress.com/item/1005003301708931.html) R$ 19.22 + 25.73 
+
+
+### Square Washer (Plate)
+
+Dimensions: Commonly about ½” x ½” (or 14mm x 14mm), with a thickness of about 0.15" (4mm).
+This plate spreads the load of the screw over a larger area, ensuring a secure hold.
+
+
 ## Required Material
 
 - Durcisseur : Correspondant à la résine choisie.

Surf-Fins-10inch.json

@@ -36,7 +36,6 @@
             "parts": "all",
             "piston_depth": "5",
             "printable": "false",
-            "resin_escape_diameter": "4",
             "scale_factor": "1",
             "show_curve_points": "false",
             "show_debug_layers": "false",
@@ -83,7 +82,6 @@
             "pin_dia": "3",
             "piston_depth": "5",
             "printable": "true",
-            "resin_escape_diameter": "4",
             "scale_factor": "1",
             "screw_dia": "4.5",
             "screw_pos": "9.5999999999999996",
@@ -135,7 +133,6 @@
             "pin_dia": "3",
             "piston_depth": "5",
             "printable": "true",
-            "resin_escape_diameter": "4",
             "scale_factor": "1",
             "screw_dia": "4.5",
             "screw_pos": "9.5999999999999996",
@@ -145,6 +142,171 @@
             "tab_height": "13",
             "thick": "9.1999999999999993",
             "thick_cut": "1"
+        },
+        "New set 4": {
+            "$fn": "64",
+            "base_extra_thickness": "20",
+            "base_tickness": "8",
+            "box_thickness": "9.5999999999999996",
+            "build_box": "false",
+            "build_fin": "false",
+            "build_mold": "true",
+            "draw_profile": "false",
+            "fin_back_angle": "20",
+            "fin_back_height": "30",
+            "fin_back_strength": "30",
+            "fin_back_widthdraw": "20",
+            "fin_base": "130",
+            "fin_counter_angle": "30",
+            "fin_counter_strength": "10",
+            "fin_edge_angle": "30",
+            "fin_edge_strength": "30",
+            "fin_edge_withdraw": "20",
+            "fin_end_angle": "110",
+            "fin_end_strength": "30",
+            "fin_height": "254",
+            "fin_start_angle": "70",
+            "fin_sweep": "25",
+            "fin_thickness": "9",
+            "fin_top_withdraw": "35",
+            "fin_width": "270",
+            "fin_width_tip": "5",
+            "height": "25",
+            "merge_holes_diameter": "6",
+            "mirror_vec": "[1, 1, 0]",
+            "mold_base_height": "10",
+            "mold_extra_width": "15",
+            "mold_part": "top",
+            "mold_piston_height": "10",
+            "mold_top_height": "5",
+            "partition": "high",
+            "parts": "all",
+            "pin_back": "9",
+            "pin_depth": "16.399999999999999",
+            "pin_dia": "3",
+            "piston_depth": "5",
+            "printable": "true",
+            "scale_factor": "1",
+            "screw_dia": "4.5",
+            "screw_pos": "9.5999999999999996",
+            "show_curve_points": "false",
+            "show_debug_layers": "false",
+            "skirt_angle": "80",
+            "start": "[0, 0]",
+            "tab_height": "13",
+            "thick": "9.1999999999999993",
+            "thick_cut": "1"
+        },
+        "New set 5": {
+            "$fn": "64",
+            "base_extra_thickness": "20",
+            "base_tickness": "8",
+            "box_thickness": "9.5999999999999996",
+            "build_box": "false",
+            "build_fin": "true",
+            "build_mold": "false",
+            "draw_profile": "false",
+            "fin_back_angle": "20",
+            "fin_back_height": "30",
+            "fin_back_strength": "30",
+            "fin_back_widthdraw": "20",
+            "fin_base": "130",
+            "fin_counter_angle": "30",
+            "fin_counter_strength": "10",
+            "fin_edge_angle": "30",
+            "fin_edge_strength": "30",
+            "fin_edge_withdraw": "20",
+            "fin_end_angle": "110",
+            "fin_end_strength": "30",
+            "fin_height": "254",
+            "fin_start_angle": "70",
+            "fin_sweep": "25",
+            "fin_thickness": "9",
+            "fin_top_withdraw": "35",
+            "fin_width": "270",
+            "fin_width_tip": "5",
+            "height": "25",
+            "merge_holes_diameter": "6",
+            "mirror_vec": "[1, 1, 0]",
+            "mold_base_height": "10",
+            "mold_extra_width": "15",
+            "mold_part": "all",
+            "mold_piston_height": "10",
+            "mold_top_height": "5",
+            "partition": "none",
+            "parts": "all",
+            "pin_back": "9",
+            "pin_depth": "16.399999999999999",
+            "pin_dia": "3",
+            "piston_depth": "5",
+            "printable": "true",
+            "scale_factor": "1",
+            "screw_dia": "4.5",
+            "screw_pos": "9.5999999999999996",
+            "show_curve_points": "false",
+            "show_debug_layers": "false",
+            "skirt_angle": "80",
+            "start": "[0, 0]",
+            "tab_height": "13",
+            "thick": "9.1999999999999993",
+            "thick_cut": "1",
+            "version": "0.9b"
+        },
+        "New set 6": {
+            "$fn": "64",
+            "base_extra_thickness": "20",
+            "base_tickness": "8",
+            "box_offset": "80",
+            "box_thickness": "9.5999999999999996",
+            "build_box": "false",
+            "build_fin": "false",
+            "build_mold": "false",
+            "draw_profile": "true",
+            "fin_back_angle": "20",
+            "fin_back_height": "30",
+            "fin_back_strength": "30",
+            "fin_back_widthdraw": "20",
+            "fin_base": "130",
+            "fin_counter_angle": "30",
+            "fin_counter_strength": "10",
+            "fin_edge_angle": "30",
+            "fin_edge_strength": "30",
+            "fin_edge_withdraw": "20",
+            "fin_end_angle": "110",
+            "fin_end_strength": "30",
+            "fin_height": "254",
+            "fin_start_angle": "70",
+            "fin_sweep": "25",
+            "fin_thickness": "9",
+            "fin_top_withdraw": "35",
+            "fin_width": "270",
+            "fin_width_tip": "5",
+            "height": "25",
+            "merge_holes_diameter": "6",
+            "mirror_vec": "[1, 1, 0]",
+            "mold_base_height": "10",
+            "mold_extra_width": "15",
+            "mold_part": "all",
+            "mold_piston_height": "10",
+            "mold_top_height": "5",
+            "partition": "none",
+            "parts": "all",
+            "pin_back": "9",
+            "pin_depth": "16.399999999999999",
+            "pin_dia": "3",
+            "piston_depth": "5",
+            "printable": "true",
+            "scale_factor": "1",
+            "screw_dia": "4.5",
+            "screw_pos": "9.5999999999999996",
+            "show_curve_points": "false",
+            "show_debug_layers": "false",
+            "skirt_angle": "80",
+            "start": "[0, 0]",
+            "tab_height": "13",
+            "thick": "9.1999999999999993",
+            "thick_cut": "1",
+            "version": "0.9b"
         }
     }
 }

Surf-Fins-10inch.scad

@@ -91,7 +91,7 @@ mold_extra_width        = 15;
 
 mold_piston_height      = 10;
 
-resin_escape_diameter   = 4; 
+//resin_escape_diameter   = 4; 
 
 // Diameter for screw holes in mm
 merge_holes_diameter = 6;
@@ -134,6 +134,10 @@ pin_back  = 9;
 //thick_cut = 0.001*1000;
 thick_cut = 1;
 
+// Offset the box to fit the fin
+box_offset = 80;
+
+
 // ---------------------*/
 /*     [Debugging]      */
 // ---------------------*/
@@ -153,12 +157,16 @@ draw_profile = false;
 // Rendering parts
 build_fin       = false;
 build_box       = false;
-build_mold     = true;
+build_mold      = true;
+partition       = "none";    // [none, low, high]
 
 parts           = "all";      // [all, top, bottom]
 
 
 mold_part       = "all";   // [all, top, bottom]
+
+version         ="0.9b";
+
 // Scaling
 scale_factor    = 1.0; // [0.1:0.1:2] 
 
@@ -230,125 +238,61 @@ points = flatten([
 profile_curve_with_base  = translate_path( addBase(asCurve(points,32)),-fin_base/2,0 );
 profile  = translate_path( asCurve(points,32),-fin_base/2,0 );
 
-//profile_curve_with_base  = translate_path( asCurve(points,32),-fin_base/2,0 );
-//profile_curve_with_base  = resample_path(translate_path( asCurve(points,32),-fin_base/2,0 ),64);
-
 assert(is_path_simple(profile_curve_with_base));
 
-
-if (show_curve_points)
-    color("Blue")move_copies(profile_curve_with_base) circle($fn=16);
-
-
-// Draw fin profile
-if (draw_profile) {
-    //left(425) drawProfile( points, true  );
-    
-    
-    layer0 = expandPath(profile_curve_with_base,-2);
-    layer1 = expandPath(profile_curve_with_base,-8);
-    layer2 = expandPath(profile_curve_with_base,-15);
-    layer3 = expandPath(profile_curve_with_base,-30);
-    layer4 = expandPath(profile_curve_with_base,-40);
-    
-    back(10) showDebugPath(layer0);
-    
-    
-    left(500) {
-        color("Red") polygon(profile_curve_with_base);
-        up(10) polygon(layer0);
-        up(20) color("Yellow") polygon(layer1);
-        up(30) color("Brown") polygon(layer2);
-    }
-    
-    layers = [profile_curve_with_base,layer0,layer1,layer2,layer3,layer4];
-    
-    left (800) color ("Green") polygon(profile_curve_with_base);
-    
-       left (1000) color ("Green") shell(10) polygon(profile_curve_with_base);
-}    
-
-
-
 // *****************
 // *  Fin Drawing  *
 // *****************
 if ( build_fin ) 
-    scale([scale_factor, scale_factor, scale_factor]) 
-        buildFin( fin_thickness );
-
-if ( build_box ) {
-      buildBox();
-} 
+    scale([scale_factor, scale_factor, scale_factor]) {
+        union() {
+            buildCompletFin();
+            left(box_offset) usBox(fin_base+30);
+        }
+    }        
         
 /**
  * Render Mold
  */
-if ( build_mold )              buildMold();    
-
+if ( build_mold )            
+    difference(){
+        buildMold();
+        if (partition=="low")
+             partitionMask(false);
+        if (partition=="high")
+             partitionMask(true);
+             
+    }                
 
+/**
+ * Build complete fin
+ */
 module buildCompletFin() {
     difference(){
-        buildFin( fin_thickness );
-        //buildBox();
-        // Remove extra base
-        baseMask();
+        buildFin( fin_thickness );  // Fin 
+        baseMask();                 // Remove extra base
     }
 }
 
-
-module buildBox() {
-    /*
-    left(80) {
-        xflip() {     
-            finfit(fin_base+20, [1,1,0],false,false);
-        }        
-    
-        //up(20) tab_cut();
-    }
-    */
-        
-}
-module buildBoxMold() {
-
-    // To be defined
-}
-
 module baseMask() {
     fwd(OFFSET) cube([fin_base*1.1,base_extra_thickness*1.1,fin_thickness*1.1],anchor=BACK);
 }
 
 
-
 module usBoxMask() {
-    left(80) color("Blue") usBox(fin_base+30,thickness = box_thickness+2*OFFSET,drill=false);
+    left(box_offset) 
+        color("Blue") 
+            usBox(fin_base+30,thickness = box_thickness+2*OFFSET,drill=false);
 }
 
 
-
-/*
-module bottomSupport() {
-    moldHeight = 10;
-    moldContour =  expandPath(profile,mold_extra_width);
-    down(moldHeight) 
-        linear_extrude (moldHeight) polygon(moldContour);  // bottom support
-}
-*/
-
-module support( part ) {
-    moldHeight = 10;
-    moldContour =  expandPath(profile,mold_extra_width);
-    down( (part == "bottom" ? 1 : 0) * moldHeight) 
-        linear_extrude (moldHeight) polygon(moldContour);  // bottom support
-}
-
 /**
  * Build mold
  * 
  */
 module buildMold() {
     // Bottom Mold
-    if (mold_part != "top") {
+    if (mold_part != "top") right( printable ? 120 : 0 ) union() {
         // Fin mold
         difference() {
             support(part="bottom");
@@ -357,7 +301,8 @@ module buildMold() {
         }
         // Box mold
         difference() {
-            left(80)  finBoxMold( fin_base+30,part="bottom",skirt=false );
+            left(box_offset)  
+                finBoxMold( fin_base+30,part="bottom",skirt=false );
             // Remove fin
             buildCompletFin(); 
         }
@@ -365,7 +310,7 @@ module buildMold() {
         moldSkirt( part="bottom" );
     }
     // Top
-    if (mold_part != "bottom") up(80) {
+    if (mold_part != "bottom") /*up(1* 150)*/ left( printable ? 120 : 0 ) yrot(printable ? 180 : 0 )   union() {
         difference(){
             support(part="top");
             usBoxMask();
@@ -374,43 +319,37 @@ module buildMold() {
         }    
         // Box mold
         difference() {
-            left(80)  finBoxMold( fin_base+30,part="top",skirt=false );
+            left(box_offset)  
+                finBoxMold( fin_base+30,part="top",skirt=false );
             // Remove fin
-            //buildCompletFin(); 
+            buildCompletFin(); 
         }
         // Mold skirt
-        down( fin_thickness * 3 ) moldSkirt( part="top" );    
+        difference() 
+        {
+            down( fin_thickness * 3 ) moldSkirt( part="top" ); // Inclinded Skirt
+            back(0.65)
+                cube([250,40,9.6],anchor=BACK); // Remove skirt on us box side
+        }    
+        
     }
-    
-    
-    
-    //up(50) buildCompletFin();
-    
-    //left(300) linear_extrude (skirtHeight) polygon(moldSkirtRegion);
-    /*
-    if (mold_part !=  "top") 
-        difference() { 
-            case(mold_base_height,true);
-            // Piston
-            down(piston_depth-OFFSET) fwd(20) bottomInsert(); 
-        }
-    // Top Mold
-    if (mold_part !=  "bottom") 
-        up(printable ? 0 : 60) fwd(printable ? fin_height+50 : 0) down(mold_base_height) mirror([0,0,printable ? 1 : 0 ])  {
-            difference() {
-                union() {
-                    // case
-                    case(mold_top_height,false); 
-                    // Piston
-                    mirror([1,0,0])        
-                    down(mold_top_height+piston_depth-OFFSET) fwd(20) topPiston(); 
-                };
-                resin_escape(40);
-            }
-        }      
-    */    
+     
 }
 
+
+module support( part ) {
+    moldHeight = 10;
+    moldContour =  expandPath(profile,mold_extra_width);
+    if (part == "bottom") {
+        down( moldHeight ) 
+            linear_extrude (moldHeight) polygon(moldContour);  // bottom support
+    } else if (part == "top") {
+        //linear_extrude (moldHeight) polygon(moldContour);  // top support
+        linear_extrude (moldHeight) polygon(profile);  // top support
+    }
+}
+
+
 /**
  * Build the piston skirt 
  * 
@@ -421,32 +360,18 @@ module moldSkirt( part ){
     
     box_profile         = move([-80,0],profileUS (fin_base+30));
     finAndBoxProfile    = path_merge_collinear(union([box_profile,profile]));    
+    moldHeight          = fin_thickness * 3;
     
-    //if (part == "bottom") {
-
-    skirt( finAndBoxProfile, side = part ,moldThickness = 3 , angle = skirt_angle, moldDeep = fin_thickness );
-    //} else if (part == "top") {
-        
-    
-    //}
-    
+    up (part=="top" ? moldHeight : 0 )
+        skirt( finAndBoxProfile, side = part ,moldThickness = 3 , angle = skirt_angle, moldDeep = fin_thickness );
 }
 
-//moldSkirt(part="top");
-
-
-
-
-
 module moldJunctionMask(moldThickness = 3,height,angle){
 
     deviation = opp_ang_to_adj (height,angle);
     right(moldThickness)
     left(moldThickness/2)
-    down(OFFSET)
-    //fwd(60)
-    //back(moldThickness*2-0.5)
-    back(moldThickness*1.2-OFFSET )
+    down( OFFSET ) back( moldThickness*1.2 - OFFSET )
         color("Red") 
             prismoid(
                 size1=[fin_width/2-1.5*moldThickness, moldThickness*3+2*OFFSET], 
@@ -455,6 +380,7 @@ module moldJunctionMask(moldThickness = 3,height,angle){
             );
 }
 
+
 module buildMoldSkirt( height,offset,thickness ) {
     outside = expandPath(profile,offset);
     inside  = expandPath(profile,offset-thickness);
@@ -479,52 +405,27 @@ module buildMoldSkirt( height,offset,thickness ) {
 }
 
 
-// *****************
-// * Bottom insert *
-// *****************
-module bottomInsert() {
-    debug=true;
-    layer_profile       = profile_curve_with_base; 
-    skin( [ layer_profile,expandPath(layer_profile,3) ], z=[0,piston_depth], slices=0 )
-       up(OFFSET) 
-        buildFinSide(true)
-        ;
-}
-
-// *****************
-// * Top piston    *
-// *****************
-module topPiston() {
-    debug=true;
-    layer_profile       = profile_curve_with_base; 
-    difference() {
-        skin( [ layer_profile,expandPath(layer_profile,3) ], z=[0,piston_depth], slices=0 );
-        down(OFFSET)
-        buildFinSide(false);
-    }
-}
-
 /**
  * Build fin
  *
+ * @param thickness - Thickness of the fin 
  */ 
 module buildFin( thickness ) {
     union() {
-        if (parts != "bottom") buildFinSide( thickness );
-        if (parts != "top")    buildFinSide( thickness , true );
+        if (parts != "bottom"   ) buildFinSide( thickness );
+        if (parts != "top"      ) buildFinSide( thickness , true );
     }
 }
 
 /**
  * Build fin side
- * 
- * @param flip - Define it it is top or bottom fin side
+ *
+ * @param thickness     - Thickness of the surf fin 
+ * @param flip          - Define it it is top or bottom fin side
+ *
  */
 module buildFinSide(thickness,flip=false) {
-
-    //profile_curve_with_base1 = subdivide_path (profile_curve_with_base,500);
     
-    //if (false)
     mirror([0,0,flip ? 1 : 0])
         color(flip ? "Gray" : "LightGray")
         ellipse_extrude( thickness / 2 /*,height=2*/,center=false,twist=-7) 
@@ -532,14 +433,34 @@ module buildFinSide(thickness,flip=false) {
             polygon( profile_curve_with_base);
 } 
 
-module resin_escape(length) { 
-    color ("Blue") cylinder(h=length, r=resin_escape_diameter/2);
-}
-
 
+/**
+ * Add base to fin profile 
+ *
+ * @param path  - Profile of the surf fin
+ */
 function addBase(path) = concat(path,[[fin_base,-base_extra_thickness],[0,-base_extra_thickness]]);
 
 
+
+/**
+ * Partition mask
+ 
+ * @param inverse   - Side of the cut
+ * @param cut       - Cut type
+ */
+module partitionMask(inverse = false,cut = "sinewave") {
+    partition_mask(
+                    l=fin_width*3,          // Length   on x axis
+                    w=fin_height/2*1.5,     // Deepness on y axis    
+                    h=80,                   // height   on z axis
+                    cutpath=cut,
+                    inverse=inverse,
+                    anchor=FRONT
+    );
+}
+
+
 /**
  * Draws a profile based on Bezier path points with optional debug visualization.
  * 
@@ -553,17 +474,14 @@ function addBase(path) = concat(path,[[fin_base,-base_extra_thickness],[0,-base_
  */
 module drawProfile( points,debug = true ){
 
+    text_size=40;
 
-    debugPoint (start,      "Start",    "Red"   );
-    debugPoint (top_point,  "Top",      "Blue"  );
-    debugPoint (edge_point, "Edge",     "Brown" );
-    debugPoint (counter_edge_point,     "Counter Edge", "Brown" );
-    debugPoint (tail_point, "Tail",     "Yellow" );
-    debugPoint (end_point,  "End",      "Yellow" );
-    
-    //pt  = [100,0];
-    //pos = bezpath_closest_point(points, pt);
-    //xy  = bezpath_points(points,pos[0],pos[1]);
+    debugPoint (start,      "Start",    "Red"                   ,textSize=text_size , t=[-20,4,0]);
+    debugPoint (top_point,  "Top",      "Blue"                  ,textSize=text_size , t=[-5,5,0]);
+    debugPoint (edge_point, "Edge",     "Brown"                 ,textSize=text_size , t=[10,-5,0]);
+    debugPoint (counter_edge_point,     "Counter Edge", "Brown" ,textSize=text_size , t=[35,-5,0]);
+    debugPoint (tail_point, "Tail",     "Yellow"                ,textSize=text_size , t=[8,-5,0]);
+    debugPoint (end_point,  "End",      "Yellow"                ,textSize=text_size , t=[13,4,0]);
     
     debug_bezier(points, N=3,width=1.2);
 }
@@ -571,6 +489,19 @@ module drawProfile( points,debug = true ){
 
 
 
+echo ("****************************");
+echo ("** Build              **");
+echo ("****************************");
+echo (str("filename :","    surf-fins-10inch-",mold_part,"-",partition,"_",version,".stl","       "));
+
+// Draw fin profile
+if (draw_profile) drawProfile(points);
+
+
+// Show curve points    
+if (show_curve_points)
+    color("Blue")move_copies(profile_curve_with_base) circle($fn=16);
+
 
     
     

common.scad

@@ -31,12 +31,14 @@ function handle(point,angle,strength) = [
 /**
  * Show Debug point
  */
-module debugPoint(point, id, color,textSize=20,r=1.5) {
+module debugPoint(point, id, color,textSize=20,r=1.5,t = [0,0,0]) {
     translate(point) {
         color(color) sphere(r = r);
         
         //translate([3, 3, 0.6]) {
-        translate([textSize/7, textSize/7, textSize/10]) {
+
+       
+        translate([textSize/7+t[0], textSize/7+t[1], textSize/10+t[2]]) {
             color("white") 
             scale([0.2, 0.2, 1]) 
             linear_extrude(height = 0.1) 

lib/finbox_us.scad

@@ -1,7 +1,6 @@
 
-include <BOSL2/std.scad>;
-include <BOSL2/beziers.scad>;
-
+include <BOSL2/std.scad>
+include <BOSL2/beziers.scad>
 include <Round-Anything/polyround.scad>
 
 
@@ -17,12 +16,8 @@ OFFSET=0.01;
  **/
 module boxProfileUS( length ,height=23, tabHeight = 8,tabLength = 20, backRounding = 8, backExtra = 10 ) {
 
-
-    echo ("------ height",height);
-    echo ("------ tabHeight",tabHeight);
-    echo ("------ height-tabHeight",height-tabHeight);    
     assert (height-tabHeight,"height-tabHeight should be bigger than 0");
-    
+   
     tabExtra = opp_ang_to_adj(height-tabHeight,45);
     points = [
         [ -tabLength                    , 0             ,1],            // 0
@@ -46,7 +41,12 @@ function profileUS( length,height=23,tabHeight = 8,tabLength = 20, backRounding
         [ -tabLength                    , -tabHeight    ,1]             // 5
     ]);
 
-
+/**
+ * US Box 
+ *
+ * @param length : Length of the fin base. backExtra and tabLength will be added to have the full length
+ *
+ */
 module usBox( length, height=23, thickness = 9, tabLength = 20,pinDiameter = 5,pinInset = 8, backExtra = 10,cutReduction = 0.5,screw_diameter=4.5,drill = true, color="Grey" ) {
     color(color) mirror_copy([0,0,1], offset=-OFFSET) difference() {
         linear_extrude ( height = thickness/2 ) boxProfileUS( length, tabLength = tabLength, height=height, backExtra=backExtra );
@@ -69,9 +69,9 @@ module usBoxMold( length, height=23, thickness = 9, moldThickness = 4,tabLength
     assert (length >0,"length should be bigger than 0");
 
     moldHeight = thickness + 2 * moldThickness;
+    
+    
     skirtHeight = 3 * thickness;
-    echo ("---skirtHeight",skirtHeight);
-    echo ("---part",part);
     deviation = opp_ang_to_adj (skirtHeight,skirtAngle);    // Skirt devitation
     
     baseInt = profileUS (length);
@@ -79,76 +79,66 @@ module usBoxMold( length, height=23, thickness = 9, moldThickness = 4,tabLength
     topInt  = offset(baseInt,delta=deviation                , chamfer=false, same_length=true );    
     topExt  = offset(baseInt,delta=deviation+moldThickness  , chamfer=false, same_length=true );
     
-     union() {
-        difference() {
-            // Mold
-            {
-                //if ( part == "bottom")
-                    
-                    down (moldHeight/2) linear_extrude(moldHeight)    
-                        offset(r=moldThickness) 
+    if ( part == "bottom") {
+        union() {
+            difference() {
+                // Mold
+                down (moldHeight/2) 
+                    linear_extrude(moldHeight)    
+                        offset(r= (part=="top" ? 0 :  moldThickness)) 
                             boxProfileUS( length, height );
+                
+                usBox(length,height,drill=false,color="Red");
 
-                /*                        
-                if ( part == "top")
+                // Mask Top  
+                verticalMask = 
+                    part == "bottom" ? 0 : 
+                    part == "top"    ? moldHeight : 
+                    100;        
+                debug = false    ;
                     
-                    down (moldHeight/2) linear_extrude(moldHeight)    
-                        offset(r=moldThickness) 
-                            boxProfileUS( length, height );                
-                 */           
-                if ( part == "top__"  ) {
-                    //baseInt = profileUS (length);
-                    //baseInt = profileUS (length);
-                    //topInt  = offset(baseInt,delta=-deviation,chamfer=false,same_length=true);
-                    baseInt2  = offset(baseInt,delta=-moldThickness,chamfer=false,same_length=true);
-                    topInt2  = offset(baseInt,delta=deviation-moldThickness,chamfer=false,same_length=true);
-                    
-                    difference(){
-                        skin([baseInt   , topInt    ],z=[0,skirtHeight],slices=0);
-                        skin([baseInt2  , topInt2   ],z=[thickness/2+moldThickness,skirtHeight+OFFSET],slices=0);
-                    }
-                    
-                    /*    
-                    down (moldHeight/2) linear_extrude(moldHeight)    
-                        offset(r=moldThickness) 
-                            boxProfileUS( length, height );                            
-                    */        
-                }                    
-            }        
-            
-            
-            // US Box to subtract
-            usBox(length,height,drill=false,color="Red");
-
-            // Mask Top  
-            verticalMask = 
-                part == "bottom" ? 0 : 
-                part == "top"    ? moldHeight : 
-                100;        
-            down( verticalMask )
-                linear_extrude( moldHeight )    
-                    offset( r = moldThickness*2 ) 
-                        boxProfileUS( length, height );                    
-                        
-        }
-        
-        if ( part == "bottom"  ) {
+                if (!debug) 
+                    down( verticalMask )
+                    linear_extrude( moldHeight )    
+                        offset( r = moldThickness*2 ) 
+                            boxProfileUS( length, height );                    
+                            
+            }
             //topInt  = offset(baseInt,delta=deviation,chamfer=false,same_length=true);
             if (skirt) difference(){
                 skin([baseExt,topExt],z=[0,skirtHeight],slices=0);
                 skin([baseInt,topInt],z=[0,skirtHeight+OFFSET],slices=0);
             }
-        }
-        if ( part == "top") {
-        
-        }
-    }       
+        }  
+    }   
+   
+    if ( part == "top") { 
+        difference() {
+            // Top Mold
+            linear_extrude(  thickness/2+OFFSET+moldThickness /*moldHeight/2*/ )    
+                offset(r=-OFFSET)
+                    boxProfileUS( length, height );
+            // Box to subtract            
+            usBox(length,height,drill=false,color="Red");
+            
+        }                    
+    }
     
 }
 
-//usBoxMold (130,part="bottom",skirt=false);
+if ( false ) {
+    // Bottom
+   down(0) back(0) usBoxMold( 130 ,part="bottom"  ,skirt=false );
+   // Top
+   down(-50) back(0) usBoxMold( 130  ,part="top"     ,skirt=false );
+
+   down(50) back(0) usBoxMold( 130  ,part="bottom"     ,skirt=true );
+   
+   
+   //down(0) back(0) usBox(130,height=23,drill=false,color="Green");
+}  
+
 
-//back (30) usBoxMold (130,part="top",skirt=false);
 
 
 module finBoxMold( length, finLength=-1, skirtAngle = 80, part="bottom", skirt = true) {
@@ -160,14 +150,6 @@ module finBoxMold( length, finLength=-1, skirtAngle = 80, part="bottom", skirt =
     
 }
 
-//test = profileUS (100);
-//test2 = offset(test,30);
-//region1 = 
-//region([test,test2]);
-//polygon(region1);
-
-
-
 module thickness_cut(thickness,height) {
     color("Orange")
     linear_extrude(thickness) 
@@ -180,14 +162,13 @@ module thickness_cut(thickness,height) {
 
 
 
+//usBoxMold (130,part="bottom",skirt=false);
 
-//boxProfileUS( length= 188);
+//back (30) usBoxMold (130,part="top",skirt=false);
 
-//usBox( 130,drill=false );
-//usBoxMold( 130,part="top" );
+//down(0) back(0) usBox(130,height=23,drill=false,color="Green");
 
 
-
-if (false )down(50) usBoxMold( 130,part="bottom",skirt=false );
+