X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=filamentspool.scad;h=ad6906b6d2caa0184f3c85ec5eafaa771b6a1955;hb=0fae08d297e0d29f2cb1443535af7a1b083b9cbd;hp=22b3234904578f065ef0b389e80b63e359cdc6bb;hpb=335ad2071d10a401d590a135b746bbe3c7a55d98;p=reprap-play.git

diff --git a/filamentspool.scad b/filamentspool.scad
index 22b3234..ad6906b 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -8,14 +8,15 @@ bigslop=slop*2;
 function selsz(sm,lg) = fdia < 2 ? sm : lg;
 function usedove() = selsz(true,false);
 
+num_arms = selsz(3,4);
+
 exteffrad = 70;
-hubeffrad = 30;
-hubbigrad = 20;
-hublwidth = 3;
+hubeffrad = selsz(30, 60);
+hubbigrad = selsz(20, 50);
+hublwidth = selsz(3, 5);
 hubstemwidth = 2;
 hublthick = 10;
-hubaxlelen = 25;
-hubaxlerad = 5;
+hubaxlerad = selsz(5, 17/2);
 totalheightfromtower = 240;
 axletowerfudgebend = 0;
 axleaxlefudgebend = 3;
@@ -48,6 +49,8 @@ overcliproundr=2.0;
 overclipthick=1.0;
 overclipcupnextgap=20;
 
+hubaxlelen = selsz(25, cupwidth);
+
 overclipsmaller=-2.5;
 overclipbigger=0.0;
 
@@ -79,6 +82,9 @@ ratchetpawl=ratchetstep-ratchettooth-bigslop*2;
 nondove_armbase = 100;
 nondove_armhole_x = 60;
 nondove_armhole_hole = 4;
+nondove_armhole_support = 7;
+nondove_armhole_wall = 4;
+nondove_armhole_slop = 0.5;
 
 include <doveclip.scad>
 include <cliphook.scad>
@@ -235,40 +241,64 @@ module TowerDoveClipPin(){ ////toplevel
 }
 
 module Hub(){ ////toplevel
-  difference(){
-    cylinder($fn=60, h=hublthick, r=hubbigrad);
-    translate([0,0,-1])
-      cylinder($fn=30, h=hublthick+2, r=(hubbigrad-hublwidth));
-  }
   axlerad = hubaxlerad + slop;
-  difference(){
-    cylinder(h=hubaxlelen, r=axlerad+hublwidth);
-    translate([0,0,-1]) cylinder($fn=60, h=hubaxlelen+2, r=axlerad);
-  }
+  xmin = axlerad+hublwidth/2;
+  xmax = hubbigrad-hublwidth/2;
   hole = hubeffrad - hubbigrad - DoveClip_depth() - hublwidth*2;
   holewidth = DoveClipPairSane_width() - hubstemwidth*2;
-  for (ang=[0,120,240])
-    rotate([0,0,ang]) {
-      difference() {
-	translate([hubeffrad,0,0])
-	  DoveClipPairSane(h=doveclipheight,
-			   baseextend = (hubeffrad - DoveClip_depth()
-					 - hubbigrad + hublwidth));
-	if (hole>hublwidth && holewidth > 2) {
-	  translate([hubbigrad + hublwidth, -holewidth/2, -1])
-	    cube([hole, holewidth, hublthick+2]);
-	}
+  nondove_allwidth = nondove_armhole_wall*2 + totalwidth;
+  difference(){
+    union(){
+      difference(){
+	cylinder($fn=60, h=hublthick, r=hubbigrad);
+	translate([0,0,-1])
+	  cylinder($fn=30, h=hublthick+2, r=(hubbigrad-hublwidth));
       }
+      cylinder(h=hubaxlelen, r=axlerad+hublwidth);
+      for (ang=[0 : 360/num_arms : 359])
+	rotate([0,0,ang]) {
+	  difference() {
+	    if (usedove()){
+	      translate([hubeffrad,0,0])
+		DoveClipPairSane(h=doveclipheight,
+				 baseextend = (hubeffrad - DoveClip_depth()
+					       - hubbigrad + hublwidth));
+	      if (hole>hublwidth && holewidth > 2) {
+		translate([hubbigrad + hublwidth, -holewidth/2, -1])
+		  cube([hole, holewidth, hublthick+2]);
+	      }
+	    } else {
+	      difference(){
+		translate([0,
+			   -nondove_allwidth/2,
+			   0])
+		  cube([hubeffrad + nondove_armhole_x
+			+ nondove_armhole_hole/2 + nondove_armhole_support,
+			nondove_allwidth,
+			nondove_armhole_wall + totalheight]);
+		translate([hubeffrad,
+			   -nondove_allwidth/2
+			   + nondove_armhole_wall - nondove_armhole_slop,
+			   nondove_armhole_wall])
+		  cube([nondove_armhole_x + 50,
+			totalwidth + nondove_armhole_slop*2,
+			totalheight + 1]);
+		translate([hubeffrad + nondove_armhole_x, 0, -20])
+		   cylinder(r= nondove_armhole_hole/2, h=50, $fn=10);
+	      }
+	    }
+	  }
+	}
+      for (ang = [0 : 180/num_arms : 359])
+	rotate([0,0,ang]) rotate([90,0,0]) {
+	  translate([0,0,-hublwidth/2])
+	    linear_extrude(height=hublwidth)
+	    polygon([[xmin,0.05], [xmax,0.05],
+		     [xmax,hublthick-0.2], [xmin, hubaxlelen-0.2]]);
+	}
     }
-  xmin = axlerad+hublwidth/2;
-  xmax = hubbigrad-hublwidth/2;
-  for (ang = [0 : 60 : 359])
-    rotate([0,0,ang]) rotate([90,0,0]) {
-      translate([0,0,-hublwidth/2])
-	linear_extrude(height=hublwidth)
-	polygon([[xmin,0.05], [xmax,0.05],
-		 [xmax,hublthick-0.2], [xmin, hubaxlelen-0.2]]);
-    }
+    translate([0,0,-1]) cylinder($fn=60, h=hubaxlelen+2, r=axlerad);
+  }
 }
 
 module ArmExtender(){ ////toplevel