X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=filamentspool.scad;h=28b4c97956d7080f671ed9351f8bfd7e3cdd91ca;hp=f978db43a0e89cba311c9ce20a083bbd2e2e842d;hb=0fe8aba40e7d868e9d60a8af34933e392b8f108c;hpb=f9f76585e4e0d94797125cd320d4cd4378d0a6d1

diff --git a/filamentspool.scad b/filamentspool.scad
index f978db4..28b4c97 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -130,7 +130,18 @@
 //     NB that the `light duty' version of this is shorter and
 //     will only take two `light duty' spools.
 //
-// For the above, I used the Cura `High detail' PLA profile because
+// A longer arm for three spools is also available:
+//     Set
+//           fdia=2.85
+//           lightduty=false
+//           storarm_spools=3
+//     (or look in filamentspool-storarm3.scad).
+//
+//     And print one of these, according to taste
+//            StorageArmLeft
+//            StorageArmRight
+//
+// For all of these, I used the Cura `High detail' PLA profile because
 // I wanted it pretty, but the `Standard' profile should do fine.
 //
 // ===== Spools for 1.75mm filament =====
@@ -697,6 +708,8 @@ storarm_mainlen = hubaxlelen*storarm_spools
   + (storarm_cope_hubaxle_mk1 ? 10 : 0);
 storarm_totlen = storarm_mainlen + storarm_hooklen;
 
+storarm_taller = storarm_axleslop * (storarm_spools-2);
+
 storarm_mid_off_y = storarm_axlerad;
 
 storarm_base_off_y = storarm_mid_off_y + storarm_base_h/2;
@@ -714,7 +727,7 @@ module StorageArmDiagPartSide(xmin, xmax){
   }
 }
 
-module StorageArmDiagPart(xmin, xmax, shear, adjbot){
+module StorageArmDiagPart(xmin, xmax, adjbot, shear){
   hull(){
     StorageArmDiagPartSide(xmin,xmax);
 
@@ -752,23 +765,26 @@ module StorageArmAtMountingHoles(){
 
 module StorageArmRight(){ ////toplevel
   shear = storarm_hookheight / (storarm_mainlen/2);
+  shear2 = shear + storarm_taller / (storarm_mainlen/2);
+  base_xyz = [-storarm_base_d, -storarm_base_off_y, storarm_base_w];
 
-  StorageArmDiagPart(-1, storarm_mainlen/2+1, shear, 0);
-  StorageArmDiagPart(storarm_mainlen/2-1, storarm_mainlen+1, shear/2,
-		     storarm_hookheight/2);
+  StorageArmDiagPart(-1, storarm_mainlen/2+1,
+		     -storarm_taller, shear2);
+  StorageArmDiagPart(storarm_mainlen/2-1, storarm_mainlen+1,
+		     storarm_hookheight/2, shear/2);
 
   translate([0, storarm_hookheight, 0])
     StorageArmDiagPart(storarm_mainlen, storarm_totlen,
-		       shear/2, -storarm_hookheight/2);
+		       -storarm_hookheight/2, shear/2);
 
   difference(){
     union(){
       hull(){
-	translate([-storarm_base_d, -storarm_base_off_y, storarm_base_w])
+	translate(base_xyz)
 	  rotate([0,90,0])
 	  linear_extrude(height=storarm_base_mind)
 	  StorageArmBaseTemplate();
-	StorageArmDiagPart(-1, 0, shear, 0);
+	StorageArmDiagPart(-1, 0, -storarm_taller, shear);
       }
       StorageArmAtMountingHoles(){
 	cylinder(r= storarm_screw_hole_head/2,
@@ -783,6 +799,9 @@ module StorageArmRight(){ ////toplevel
 	cylinder(r= (storarm_screw_hole_head + storarm_screw_hole_head_slop)/2,
 		 h=20);
     }
+    translate(base_xyz + [0, storarm_base_h/4, -storarm_base_w/4])
+      rotate([0,90,0])
+      Commitid_BestCount([storarm_base_w/2, storarm_base_h/2]);
   }
 }