X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=towelbar-antislide.scad;h=4a35d8a37724cbab0f029dfa2fedd9701f80075a;hb=5ea2183729d895f546814c9da9da7d6700ac93cc;hp=538e86ac90e01b631c599881d2df9763c734bf8e;hpb=4e9253e3098051aff607c03c9e00e8ebcdce8186;p=things.git

diff --git a/towelbar-antislide.scad b/towelbar-antislide.scad
index 538e86a..4a35d8a 100644
--- a/towelbar-antislide.scad
+++ b/towelbar-antislide.scad
@@ -2,20 +2,24 @@ infty=200;
 eps=0.01;
 
 bar_diam = 20;
-body_h = 15;
-body_l = 100;
+body_h = 7;
+body_l = 150;
 
 wall = 1.5;
 
-spike_w = 1;
-spike_l = 2;
+spike_w_bot = 1;
+spike_w_top = 6;
+spike_l = 5;
+
+spike_count = 8;
+spike_dist = body_l/(spike_count + 1);
 
 module spike() {
 	hull() {
-		translate([-body_h/4, 0, -eps])
-			cube([body_h/2, bar_diam/2+wall/2, eps]);
-		translate([-spike_w/2, 0, -body_h/2])
-			cube([spike_w, bar_diam/2 + wall + spike_l, eps]);
+		translate([-spike_w_top/2, 0, body_h/2-eps])
+			cube([spike_w_top, bar_diam/2+wall/2, eps]);
+		translate([-spike_w_bot/2, 0, -body_h/2])
+			cube([spike_w_bot, bar_diam/2 + wall + spike_l, eps]);
 	}
 }
 
@@ -24,10 +28,8 @@ difference() {
 		translate([-body_l/2, 0, 0])
 			rotate([0, 90, 0])
 				cylinder(r = bar_diam/2 + wall, h = body_l);
-		for (x = [-37.5:15:37.5])
-			translate([x, 0, 0]) spike();
-		for (x = [-45:15:45])
-			translate([x, 0, 0]) scale([1, 1, -1]) spike();
+		for (i = [-spike_count/2:1:spike_count/2])
+			translate([i*spike_dist, 0, 0]) spike();
 	}
 			
 	// tube hole
@@ -36,8 +38,8 @@ difference() {
 			cylinder(r = bar_diam/2, h = body_l + 2*eps);
 	// cut the bottom
 	translate([-infty/2, -infty/2, -infty-body_h/2]) cube(infty);
-	// cut the bottom
+	// cut the top
 	translate([-infty/2, -infty/2, body_h/2]) cube(infty);
-	// cut the bottom rear half
+	// cut the rear half
 	translate([-infty/2, -infty, -infty/2]) cube(infty);
 }