X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;ds=sidebyside;f=filamentspool.scad;h=2d20548fc1aab70ef7d4b613801f6cc64c0fb3c4;hb=6422743ddc08cb3e04eb78ea2b1bd54f9d117ed7;hp=500725a84492faa676bc8b6fd5bedc53ff462f3c;hpb=855145e3ca1064562f1f9acfaa169c9b22fdce23;p=reprap-play.git

diff --git a/filamentspool.scad b/filamentspool.scad
index 500725a..2d20548 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -40,9 +40,9 @@
 //            Hub
 //            ArmEnd x 4
 //            FilamentCup x 4  (or FilamentCupPair x 2)
-//            CupSecuringClup x 4
+//            CupSecuringClip x 4
 //
-//     You will also need  4 x M4 machine screws and nuts
+//     You will also need  4 x M4 machine screws and nuts.
 //
 //   - Light duty 3-armed spool suitable for up to around 30m
 //     of Faberdashery 2.85mm PLA.
@@ -54,7 +54,7 @@
 //           Hub
 //           ArmEnd x 3
 //           FilamentCup x 3  (or FilamentCup + FilamentCupPair)
-//           CupSecuringClup x 3
+//           CupSecuringClip x 3
 //           TowerDoveClipPin x 6
 //
 //     When assembling, insert one TowerDoveClipPin from each side,
@@ -64,6 +64,11 @@
 //     (note that the light duty and heavy duty CupSecuringClips
 //      are slightly different)
 //
+// When mounting either spool on the TAZ-5 spool arm, put the `pointy'
+// end of the hub towards the printer - ie, put put the spool on
+// `backwards'.  This ensures that the spool's arms will clear the
+// printer framework.
+//
 // For the above, I generally used the Cura `Standard' PLA profile.
 //
 //   - Storage arm suitable for screwing to walls, bookshelves,
@@ -671,6 +676,109 @@ module StorArmHoleTest(){ ////toplevel
 }
 
 
+//----- filament guide spacer -----
+
+guide_armdia = 15.0;
+guide_armwidth = 10.2;
+guide_armcorelen = 15.3;
+
+guidefilclip_outerdia = 22.8;
+
+guidespacer_armslop = 0.75;
+guidespacer_armlenslop = 0.75;
+
+guidespacer_prongprotrude = 4;
+guidespacer_thick = 1.6;
+
+// calculated
+
+guidespacer_armdia = guide_armdia + guidespacer_armslop;
+guidespacer_armwidth = guide_armwidth + guidespacer_armslop;
+guidespacer_len = guide_armcorelen + guidespacer_armlenslop;
+
+guidespacer_wingheight = (guidefilclip_outerdia - guidespacer_armdia)/2;
+
+module FilamentGuideArmTemplate(extra=0){
+  intersection(){
+    circle(r= (guidespacer_armdia/2) + extra);
+    square(center=true, [guidespacer_armwidth+extra*2,
+			 guidespacer_armdia + extra*2 + 10]);
+  }
+}
+
+module FilamentGuideSpacerInnerTemplate(){
+  FilamentGuideArmTemplate();
+  translate([0, -guidespacer_armdia/2])
+    square(center=true, [guidespacer_armwidth - guidespacer_prongprotrude,
+			 guidespacer_armdia]);
+}
+
+module FilamentGuideSpacer(){ ////toplevel
+  difference(){
+    union(){
+      linear_extrude(height= guidespacer_len)
+	FilamentGuideArmTemplate(extra= guidespacer_thick);
+      for (angle=[26, 60]) {
+	for (m=[0,1]) {
+	  mirror([m,0,0]) {
+	    rotate([0,0,angle]) {
+	      hull(){
+		for (t=[[0, guidespacer_wingheight],
+			[guidespacer_len-1, -guidespacer_wingheight]])
+		  translate([0,0, t[0] + 0.5])
+		    cube([guidespacer_thick, guidespacer_armdia + t[1]*2,
+		      1],
+			 center=true);
+	      }
+	    }
+	  }
+	}
+      }
+    }
+    translate([0,0,-1])
+      linear_extrude(height= guidespacer_len+5)
+      FilamentGuideSpacerInnerTemplate();
+  }
+}
+
+
+//----- replacement filament guide arm for TAZ-5 -----
+
+guidearm_armslop = 0.25;
+guidearm_armlenslop = 0.25;
+
+guidearm_hookprotr = 4;
+guidearm_hookprotrflat = 1;
+guidearm_hookslope = 0.3;
+
+// calculated
+
+guidearm_armdia = guide_armdia - guidearm_armslop;
+guidearm_armwidth = guide_armwidth - guidearm_armslop;
+guidearm_armcorelen = guide_armcorelen + guidearm_armlenslop;
+
+module FilamentGuideArmTipPositive(){
+  r = guidearm_armdia/2;
+
+  translate([0,0,-1])
+    cylinder(r=r, h= guidearm_armcorelen+2);
+  translate([0,0, guidearm_armcorelen]){
+    hull(){
+      for (ts=[-1,+1]) {
+	translate([ts * guidearm_hookprotr, 0,0])
+	  cylinder(r=r, h=guidearm_hookprotrflat);
+      }
+      translate([0,0, guidearm_hookprotr/guidearm_hookslope])
+	cylinder(r=r, h=guidearm_hookprotrflat);
+    }
+  }
+}
+
+module FilamentGuideArm(){ ///toplevel
+  FilamentGuideArmTipPositive();
+}
+
+
 module Demo(){
   translate([-hubeffrad-30,50,0]) Hub();
   ArmEnd();
@@ -689,4 +797,6 @@ module Demo(){
 //AxleFrictionWasher();
 //StorageArmLeft();
 //StorArmHoleTest();
+//FilamentGuideSpacer();
+//FilamentGuideArm();
 //Demo();