From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Tue, 27 May 2025 20:35:48 +0000 (+0100)
Subject: toolbox-inserts: UniversalJoint: wip
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=eaccec201c76b70e84806acee45d8be56bf536a4;p=reprap-play.git

toolbox-inserts: UniversalJoint: wip

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---

diff --git a/toolbox-inserts.scad b/toolbox-inserts.scad
index 0535f18..87a05da 100644
--- a/toolbox-inserts.scad
+++ b/toolbox-inserts.scad
@@ -507,11 +507,13 @@ module RatchetHandleHolder() { ////toplevel
 
 module UniversalJointPositive() { ////toplevel
   hl = universal_joint_main_len/2;
+  slope = (universal_joint_d_fat - universal_joint_d_end) / hl;
+
   for (mx = [0, 1]) {
     mirror([mx, 0, 0]) {
-      multmatrix([[1, 0, 0, 0],
-		  [0, 1, 0, 0],
-		  [0, 0, 1, 0]]) {
+      multmatrix([[1,      0, 0, 0],
+		  [0,      1, 0, 0],
+		  [-slope, 0, 1, 0]]) {
 	if (mx == 0) {
 	  linextr_x_yz(-hl -8, -hl +1)
 	    circle(r = 8.2 /2);