X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=filamentspool.scad;h=8af96483fd688feec764b8cf682b6d9a70456e72;hb=c30615536b7e124336c7fb6d15fc7b78b7cb69b6;hp=a0210080052276212dfc96ba051050ced2f81f45;hpb=b408498430dd3a38f65d3292a6de6be078d1c45b;p=reprap-play.git

diff --git a/filamentspool.scad b/filamentspool.scad
index a021008..8af9648 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -1,7 +1,7 @@
 // -*- C -*-
 
 fdia=2.85;
-lightduty=true;
+lightduty=false;
 
 slop=0.5;
 bigslop=slop*2;
@@ -11,6 +11,8 @@ function usedove() = selsz(true,true,false);
 
 num_arms = selsz(3,3,4);
 
+channelslop=selsz(slop,0.75,slop);
+
 exteffrad = 70;
 hubeffrad = selsz(30, 82, 40);
 hubbigrad = selsz(20, 38, 38);
@@ -56,7 +58,7 @@ overcliproundr=2.0;
 overclipthick=1.0;
 overclipcupnextgap=selsz(20,15,20);
 
-hubaxlelen = selsz(25, 62.5, 87.5);
+hubaxlelen = selsz(25, 62.5, 77.5);
 echo(hubaxlelen);
 
 overclipsmaller=-2.5;
@@ -103,7 +105,7 @@ include <cliphook.scad>
 include <filamentteeth.scad>
 include <axlepin.scad>
 
-channelwidth = prongthick + slop;
+channelwidth = prongthick + channelslop;
 channeldepth = prongwidth + ratchettoothheight;
 totalwidth = armendwallthick*2 + channelwidth;
 totalheight = channeldepth + armendbasethick;
@@ -449,6 +451,82 @@ module FilamentCupPair(){ ////toplevel
     rotate([0,0,180]) FilamentCup();
 }
 
+//----- storarm -----
+
+storarm_hooklen = 8;
+storarm_hookheight = 5;
+storarm_thick = 10;
+storarm_axleslop = 4;
+
+storarm_base_w = 30;
+storarm_base_h = 100;
+storarm_base_d = 15;
+storarm_base_mind = 2;
+
+storarm_cope_hubaxle_mk1 = true;
+
+// calculated
+
+storarm_axlerad = hubaxlerad - storarm_axleslop;
+storarm_mainlen = hubaxlelen + (storarm_cope_hubaxle_mk1 ? 10 : 0);
+storarm_totlen = storarm_mainlen + storarm_hooklen;
+
+storarm_mid_off_y = storarm_axlerad;
+
+storarm_base_off_y = storarm_mid_off_y + storarm_base_h/2;
+
+module StorageArmDiagPartSide(xmin, xmax){
+  xsz = xmax-xmin;
+  yuse = storarm_thick/2;
+
+  intersection(){
+    translate([xmin-1, -storarm_axlerad, storarm_thick/2])
+      rotate([0,90,0])
+      cylinder(r=storarm_axlerad, h=xsz+2, $fn=60);
+    translate([xmin, -yuse, 0])
+      cube([xsz, yuse, storarm_thick]);
+  }
+}
+
+module StorageArmDiagPart(xmin, xmax, shear, adjbot){
+  hull(){
+    StorageArmDiagPartSide(xmin,xmax);
+
+    multmatrix([[1,0,0,0],
+		[shear,1,0,0],
+		[0,0,1,0],
+		[0,0,0,1]])
+      translate([0, -storarm_axlerad*2 + adjbot, 0])
+      mirror([0,1,0])
+      StorageArmDiagPartSide(xmin,xmax);
+  }
+}
+
+module StorageArmBaseTemplate(){
+  square([storarm_base_w, storarm_base_h]);
+}
+
+module StorageArm(){ ////toplevel
+  shear = storarm_hookheight / (storarm_mainlen/2);
+
+  StorageArmDiagPart(-1, storarm_mainlen/2+1, shear, 0);
+  StorageArmDiagPart(storarm_mainlen/2-1, storarm_mainlen+1, shear/2,
+		     storarm_hookheight/2);
+
+  translate([0, storarm_hookheight, 0])
+    StorageArmDiagPart(storarm_mainlen, storarm_totlen,
+		       shear/2, -storarm_hookheight/2);
+
+  hull(){
+    translate([-storarm_base_d, -storarm_base_off_y, storarm_base_w])
+      rotate([0,90,0])
+      linear_extrude(height=storarm_base_mind)
+      StorageArmBaseTemplate();
+    StorageArmDiagPart(-1, 0, shear, 0);
+  }
+}
+
+
 module Demo(){
   translate([-hubeffrad-30,50,0]) Hub();
   ArmEnd();
@@ -465,4 +543,5 @@ module Demo(){
 //AxleWasher();
 //AxlePin();
 //AxleFrictionWasher();
+StorageArm();
 //Demo();