X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=filamentspool.scad;h=755916f2ffa721c369a69b0c6ca6e4289ca672fb;hp=5b68cb21e3bfa5abd058cbf3bc0fe98a33307e96;hb=7f35f108c8a9f7d69d147f1c8b2d8d91cf207cbb;hpb=b6727bd8da6e5d6b74bf2d0e3afb86b42f679b5e

diff --git a/filamentspool.scad b/filamentspool.scad
index 5b68cb2..755916f 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -1,7 +1,8 @@
 // -*- C -*-
 
-fdia=2.85;
-lightduty=false;
+fdia=2.85; // or 1.75
+lightduty=false; // or true
+
 
 slop=0.5;
 bigslop=slop*2;
@@ -465,10 +466,19 @@ storarm_base_mind = 2;
 
 storarm_cope_hubaxle_mk1 = true;
 
+storarm_screw_hole = 4;
+storarm_screw_hole_slop = 0.5;
+storarm_besides_hole = 4;
+
+storarm_under_hole = 5;
+storarm_screw_hole_head = 8.8;
+storarm_screw_hole_head_slop = 1.5;
+
 // calculated
 
 storarm_axlerad = hubaxlerad - storarm_axleslop;
-storarm_mainlen = hubaxlelen + (storarm_cope_hubaxle_mk1 ? 10 : 0);
+storarm_mainlen = hubaxlelen*2 + storarm_axleslop
+  + (storarm_cope_hubaxle_mk1 ? 10 : 0);
 storarm_totlen = storarm_mainlen + storarm_hooklen;
 
 storarm_mid_off_y = storarm_axlerad;
@@ -506,7 +516,25 @@ module StorageArmBaseTemplate(){
   square([storarm_base_w, storarm_base_h]);
 }
 
-module StorageArm(){ ////toplevel
+module StorageArmAtMountingHoles(){
+  bes = storarm_besides_hole + storarm_screw_hole;
+
+  x0 = bes;
+  x1 = storarm_base_w-bes;
+  y1 = storarm_base_h - bes;
+  y0 = bes;
+
+  for (pos=[ [x0, y1],
+	     [x1, y1],
+	     [x1, y0] ]) {
+    rotate([0,90,0])
+      translate([pos[0] - storarm_base_w,
+		 pos[1] - storarm_base_off_y, -storarm_base_d])
+      children();
+  }
+}
+
+module StorageArmRight(){ ////toplevel
   shear = storarm_hookheight / (storarm_mainlen/2);
 
   StorageArmDiagPart(-1, storarm_mainlen/2+1, shear, 0);
@@ -526,7 +554,32 @@ module StorageArm(){ ////toplevel
 	  StorageArmBaseTemplate();
 	StorageArmDiagPart(-1, 0, shear, 0);
       }
+      StorageArmAtMountingHoles(){
+	cylinder(r= storarm_screw_hole_head/2,
+		 h=10);
+      }
     }
+    StorageArmAtMountingHoles(){
+      translate([0,0,-1])
+	cylinder(r= (storarm_screw_hole + storarm_screw_hole_slop)/2 ,
+		 h=20);
+      translate([0,0,storarm_under_hole])
+	cylinder(r= (storarm_screw_hole_head + storarm_screw_hole_head_slop)/2,
+		 h=20);
+    }
+  }
+}
+
+module StorageArmLeft(){ ////toplevel
+  mirror([1,0,0]) StorageArmRight();
+}
+
+module StorArmHoleTest(){ ////toplevel
+  sz = storarm_screw_hole_head + storarm_besides_hole*2;
+  intersection(){
+    StorageArmRight();
+    translate([-50, -storarm_base_off_y, -1])
+      cube([100, sz, sz+1]);
   }
 }
 
@@ -547,5 +600,6 @@ module Demo(){
 //AxleWasher();
 //AxlePin();
 //AxleFrictionWasher();
-StorageArm();
+//StorageArmLeft();
+//StorArmHoleTest();
 //Demo();