X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=rc-plane-ski.scad;h=13dfffd22f5c761a763ec58cb7027e91184038c5;hb=d61a0215090a40511edb461a3210b1a40cefb1dc;hp=ebd4c56e8235a24557eb03a489ec0b1547a91581;hpb=21dac1cdeea1238fd4676633573c333c7c4fd8f8;p=things.git

diff --git a/rc-plane-ski.scad b/rc-plane-ski.scad
index ebd4c56..13dfffd 100644
--- a/rc-plane-ski.scad
+++ b/rc-plane-ski.scad
@@ -4,50 +4,67 @@ eps = 0.01;
 base_w = 30;
 base_l = 150;
 
-tip_r = 25;
-tip_rv = 25;
-tip_rv_off = base_l/2-2;
-wall = 1.25;
+center_w = 5;
+center_l = base_l - base_w;
+center_h = 1.5;
 
-axle_hole = 3;
-axle_h = 7;
-axle_off = base_l/6;
-axle_cube = 10;
+tip_l = 30;
+wall = 0.8;
+
+axle_pos = 0.55;
+axle_x = base_l/2 - axle_pos*base_l;
+
+axle_hole = 1.2 + 0.5;
+axle_slot = 1.2;
+axle_top_l = 10;
+axle_bot_l = 10;
+axle_top_w = 3;
+axle_bot_w = 10;
+axle_h = 3;
 
 module body() {
 	// base
-	translate([-base_l/2, 0 ])
-		cube([base_l, wall, base_w]);
+	translate([-base_l/2, -base_w/2, 0 ])
+		cube([base_l-tip_l, base_w, wall]);
 
 	// tip
-	intersection() {
-		// the main tube
-		difference() {
-			translate([base_l/2, tip_r, 0]) 
-				cylinder(r = tip_r, h = base_w, $fn = 128);
-			translate([base_l/2, tip_r, -eps]) 
-				cylinder(r = tip_r - wall, h = base_w+2*eps, $fn = 128);
-		}
-		// the appropriate quarter of the tube only
-		translate([base_l/2, -eps, -eps])
-			cube([tip_r + eps, tip_r + eps, base_w+2*eps]);
-		// make the tip round
-		translate([tip_rv_off, -eps, base_w/2-eps])
-			rotate([-90, 0, 0])
-			cylinder(r = tip_rv, h = base_w + 2*eps);
+	translate([base_l/2-tip_l, 0, 0])
+		scale([2*tip_l/base_w, 1, 1])
+		cylinder(r = base_w/2, h = wall);
+
+	// center reinforcement
+	for (y = [-1, 1]) scale([1, y, 1]) hull() {
+		translate([base_l/2-tip_l, axle_bot_l/2, wall])
+			cube(eps);
+		translate([-base_l/2, axle_bot_l/2, wall])
+			cube(eps);
+		translate([0, axle_bot_l/2-3, wall])
+			cube([eps, 6, eps]);
+		translate([0, axle_bot_l/2, wall])
+			cube([eps, eps, axle_h/2]);
 	}
 
-	// axle block
-	difference() {
-		translate([axle_off - axle_cube/2, wall, 0])
-			cube([axle_cube, axle_cube/2 + axle_h, axle_cube]);
-		translate([axle_off, axle_h + wall, -eps])
-			cylinder(r = axle_hole/2, h = axle_cube + 2*eps);
+	// axle holder
+	hull() {
+		translate([axle_x-axle_bot_w/2, -axle_bot_l/2, wall])
+			cube([axle_bot_w, axle_bot_l, eps]);
+		translate([axle_x-axle_top_w/2, -axle_top_l/2, wall+axle_h])
+			cube([axle_top_w, axle_top_l, eps]);
 	}
 }
 
-// left and right part
-for (i = [-1, 1]) scale([1, i, 1])
-	translate([0, axle_h, 0])
+module ski() {
+	difference() {
 		body();
+		// slot
+		translate([axle_x-axle_slot/2, -base_w/2, wall+axle_h/2])
+			cube([axle_slot, base_w, infty]);
+		// hole
+		translate([axle_x, -base_w/2, wall+axle_h/2])
+			rotate([-90, 0, 0])
+			cylinder(r = axle_hole/2, h = base_w, $fn = 6);
+	}
+}
+
+ski();