filamentspool wip

[reprap-play.git] / filamentspool.scad

diff --git a/filamentspool.scad b/filamentspool.scad
index 01c7a2fae95de67117239dea16bd8bae6b97e04f..8dbf1bf3631764632bb07409907807940ef2d150 100644 (file)
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -12,7 +12,9 @@ ratchettoothslope=0.75;
 overlap=0.5;
 cupbigrad=35;
 
-stalklength=50;
+prongstalkxwidth=3;
+
+stalklength=40;
 overclipcupgap=5;
 overclipheight=15;
 
@@ -28,6 +30,7 @@ channelwidth = prongthick + slop;
 channeldepth = prongwidth + ratchettoothheight;
 totalwidth = armendwallthick*2 + channelwidth;
 totalheight = channeldepth + armendbasethick;
+stalkwidth = prongwidth + prongstalkxwidth;
 
 doveclipheight = totalheight;
 
@@ -37,13 +40,13 @@ module ArmEnd(length=120){
       DoveClipPairBase(h=doveclipheight);
   }
 
-  for (dx = [0 : ratchetstep : length]) translate([dx,0,0]) {
-    difference(){
-      translate([0, -armendwallthick, -armendbasethick])
-       cube([ratchetstep+overlap, totalwidth, totalheight]);
-      translate([-1, 0, 0])
-       cube([ratchetstep+overlap+2, channelwidth, channeldepth+1]);
-    }
+  difference(){
+    translate([0, -armendwallthick, -armendbasethick])
+      cube([length, totalwidth, totalheight]);
+    translate([-1, 0, 0])
+      cube([length+2, channelwidth, channeldepth+1]);
+  }
+  for (dx = [0 : ratchetstep : length - stalklength]) translate([dx,0,0]) {
     translate([ratchettoothsmoothr+0.5, armendwallthick/2, 0]) minkowski(){
       rotate([90,0,0])
        cylinder($fn=20, r=ratchettoothsmoothr, h=armendwallthick);
@@ -57,13 +60,13 @@ module ArmEnd(length=120){
   }
 }
 
-module FilamentHandle(){
+module FilamentCupHandle(){
   pawlusewidth = ratchetpawl-ratchettoothsmoothr*2;
   mirror([0,1,0]) {
-    cube([stalklength, prongwidth, prongthick]);
-    translate([stalklength, prongwidth/2, 0])
-      cylinder(r=prongwidth/2, h=prongthick, $fn=20);
-    translate([ratchettoothsmoothr, prongwidth, 0]) {
+    cube([stalklength, stalkwidth, prongthick]);
+    translate([stalklength, stalkwidth/2, 0])
+      cylinder(r=stalkwidth/2, h=prongthick, $fn=20);
+    translate([ratchettoothsmoothr, stalkwidth, 0]) {
       minkowski(){
        cylinder($fn=20,r=ratchettoothsmoothr, h=1);
        multmatrix([    [       1, -ratchettoothslope, 0, 0     ],
@@ -90,7 +93,7 @@ module FilamentCupCup(){
 }
 
 module FilamentCup() {
-  FilamentHandle();
+  FilamentCupHandle();
 
   dx = cupbigrad + prongwidth;
   dy = cupbigrad + prongwidth + overclipcupgap;
@@ -100,14 +103,15 @@ module FilamentCup() {
   translate([0, -1, 0]);
   cube([prongwidth, dy+1, prongthick]);
 
+  midrad = cupbigrad + prongwidth/2;
+
   propshift = stalklength - overclipheight - prongthick;
-  proptaken = propshift + prongthick;
-  echo(cupbigrad, dx, propshift, proptaken);
+  proptaken = propshift;
+  echo(cupbigrad, dx, midrad, propshift, proptaken);
 
   translate([propshift, -1, 0])
     cube([prongwidth,
-         sqrt(cupbigrad*cupbigrad - proptaken*proptaken)
-         + overclipcupgap + prongthick + 1,
+         dy - sqrt(midrad*midrad - proptaken*proptaken),
          prongthick]);
 }