From: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Date: Mon, 23 Jan 2017 13:58:03 +0000 (+0100)
Subject: chair spring v3
X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=commitdiff_plain;h=6ec1b4106e2193b04d7bc20ef4a409c3663172d5;p=things.git

chair spring v3
---

diff --git a/chair-spring.scad b/chair-spring.scad
index b636c2b..048c5d8 100644
--- a/chair-spring.scad
+++ b/chair-spring.scad
@@ -3,7 +3,7 @@ eps = 0.01;
 
 wall = 2;
 spring_y = 23.8;
-spring_x = 7.8;
+spring_x = 8;
 spring_z = 8.5;
 
 spring_low = 1.2; // mm lower than spring_x
@@ -22,8 +22,8 @@ for (i = [-1,1]) scale([1, i, 1])
 // clip
 translate([0, -clip_w/2, 0]) cube([wall, clip_w, spring_z + clip_add_z]);
 
-spring_top_r = 10;
-spring_y_off = spring_y/4 - 1;
+spring_top_r = 9;
+spring_y_off = spring_y/4;
 
 difference() {
 	union() {
@@ -38,7 +38,10 @@ difference() {
 					$fn = 128);
 	}
 	// top of the spring
-	translate([spring_x, -infty/2, -infty/2]) cube(infty);
+	difference() {
+		translate([spring_x, -infty/2, -infty/2]) cube(infty);
+		translate([spring_x - 1, 0, -eps]) scale([0.8, 1, 1]) cylinder(r = 2.5, h = spring_z + 2*eps, $fn = 128);
+	}
 
 	// sides
 	for (i = [-1, 1]) scale([1, i, 1])
@@ -51,3 +54,5 @@ difference() {
 			cylinder(r = spring_top_r - wall, h = spring_z + 2*eps,
 					$fn = 128);
 }
+
+// color("red") translate([23.5, 0, 0]) cylinder(r = 18, h = spring_z);