X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=filamentspool.scad;h=0eba9fae60abfc455e26d6871f9f26384e4e2a5b;hb=fc3343d1347461bcf1f9233db083a9dac66c7c34;hp=218f1e815f8f180e44ecb9a3b9f6cb2f89d4ae5a;hpb=3c83e901ba163035a5e6c6c937b9e64eff87b150;p=reprap-play.git

diff --git a/filamentspool.scad b/filamentspool.scad
index 218f1e8..0eba9fa 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -30,8 +30,10 @@
 //
 // This file (and its includes) can generate:
 //
-//   - Heavy duty 4-armed spool suitable for holding a 100m
-//     Faberdashery coil on the spool arm of a Lulzbot TAZ-5.
+// ===== Heavy duty 4-armed spool for 3mm x 100m coil =====
+//
+// A heavy duty 4-armed spool suitable for holding a 100m
+// Faberdashery coil on the spool arm of a Lulzbot TAZ-5.
 //
 //     Set
 //           fdia=2.85
@@ -44,8 +46,10 @@
 //
 //     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.
+// ===== Light duty 3-armed spool for 3mm x <=30m coil =====
+//
+// A light duty 3-armed spool suitable for up to around 30m
+// of Faberdashery 2.85mm PLA.
 //
 //     Set
 //           fdia=2.85
@@ -64,6 +68,8 @@
 //     (note that the light duty and heavy duty CupSecuringClips
 //      are slightly different)
 //
+// ===== Notes regarding both the above spools =====
+//
 // 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
@@ -71,9 +77,44 @@
 //
 // For the above, I generally used the Cura `Standard' PLA profile.
 //
-//   - Storage arm suitable for screwing to walls, bookshelves,
-//     etc. (requires non-countersunk M4 screws); will hold two
-//     heavy duty spools each with a 100m coil.
+// ===== TAZ-5 feed tube adjustment kit =====
+//
+// With a TAZ-5 I recommend using this kit to improve the feed
+// reliability:
+//
+//       Set
+//           fdia=2.85
+//     And print following parts
+//           FilamentGuideSpacer (ideally, at `high detail')
+//           FilamentGuideArmPrint (optional; `high detail' or `standard')
+//
+//     And possibly also
+//           t-nut_jig_0.2.stl
+//     from Aleph Objects - look here:
+//           http://download.lulzbot.com/TAZ/accessories/tool_heads/version_2/Dual_Extruder_v2/production_parts/stl/
+//
+// The spacer clips onto the filament guide tube holder arm, on the
+// inside, with the pointy flanged end towards the filament guide
+// tube.  It stops the filament guide tube angle (and so the
+// filament's natural pickup location) changing as the print head moves.
+//
+// The FilamentGuideArm[Print] is a replacement for the arm supplied
+// with your TAZ-5.  It's longer, so that the filament pickup point is
+// closer to the middle of the coil.  Use the t-nut_jig to stop the
+// T-nuts in the aluminium channel from annoyingly sliding down to the
+// bottom while you swap out the arm.
+//
+// (Faberdashery coils, and therefore both the above spools, have a
+// larger diameter than the flat-walled spools often supplied by other
+// vendors.  And the spools above have individual arms rather than a
+// continuous disc.  If the filament `unhooks' from the arm, it can
+// pull taught around the hub and stop feeding properly.)
+//
+// ===== Spool storage arm, for mounting on walls =====
+//
+// A storage arm suitable for screwing to walls, bookshelves,
+// etc. (requires non-countersunk M4 screws); will hold two heavy duty
+// spools each with a 100m coil.
 //
 //     Set
 //           fdia=2.85
@@ -88,8 +129,10 @@
 // For the above, I used the Cura `High detail' PLA profile because
 // I wanted it pretty, but the `Standard' profile should do fine.
 //
-//   - Spool (in many parts) for handing 1.75mm filament, printable
-//     on, and with parts for mounting on, a Reprappro Huxley.
+// ===== Spools for 1.75mm filament =====
+//
+// Spool (in many parts) for handing 1.75mm filament, printable
+// on, and with parts for mounting on, a Reprappro Huxley.
 
 
 fdia=2.85; // or 1.75
@@ -164,6 +207,12 @@ wingthick=3;
 armendwallthick=selsz(2.5, 1.8, 2.5);
 armendbasethick=selsz(1.2, 1.2, 1.2);
 
+numbers_relief = 0.7;
+numbers_tick_len = 8;
+numbers_tick_width = 0.75;
+numbers_tick_linespc = 1.0;
+numbers_height_allow = 8;
+
 axlehorizoffset = 12.5;
 axlevertheight = 100;
 towercliph = 16;
@@ -198,12 +247,18 @@ include <cliphook.scad>
 include <filamentteeth.scad>
 include <axlepin.scad>
 
+real_exteffrad = selsz(exteffrad,
+		       hubeffrad + DoveClip_depth(),
+		       hubeffrad + nondove_armbase);
+
 channelwidth = prongthick + channelslop;
 channeldepth = prongwidth + ratchettoothheight;
 totalwidth = armendwallthick*2 + channelwidth;
 totalheight = channeldepth + armendbasethick;
 stalkwidth = prongwidth + prongstalkxwidth;
 
+tau = PI*2;
+
 module ArmEnd(length=armend_length){ ////toplevel
   if (usedove()) {
     translate([ratchettoothsmoothr, channelwidth/2, -armendbasethick]) {
@@ -222,6 +277,35 @@ module ArmEnd(length=armend_length){ ////toplevel
     }
   }
 
+  for (otherside=[0,1]) {
+    for (circum = [300:100:1500]) {
+      assign(rad = circum / tau)
+	assign(fn = str("filamentspool-number-n",circum,".dxf"))
+	assign(rotateoffset = [0, totalwidth/2, 0])
+	assign(xlen = rad - real_exteffrad) {
+	if (xlen >= numbers_tick_width/2
+	    + (otherside ? numbers_height_allow : 0) &&
+	    xlen <= length - (otherside ? 0 : numbers_height_allow))
+	  translate([xlen, -armendwallthick,
+		     -armendbasethick + (totalheight - numbers_tick_len)/2])
+	  translate(rotateoffset)
+	  rotate([0,0, otherside*180])
+	  translate(-rotateoffset){
+	    translate([-numbers_tick_width/2, -1, 0])
+	      cube([numbers_tick_width, numbers_relief+1, numbers_tick_len]);
+	    translate([numbers_tick_width/2 + numbers_tick_linespc,
+		       1,
+		       numbers_tick_len])
+	      rotate([90,0,0])
+	      rotate([0,0,-90])
+	      linear_extrude(height= numbers_relief+1)
+	      //    scale(templatescale)
+	      import(file=fn, convexity=100);
+	  }
+      }
+    }
+  }
+
   difference(){
     translate([0, -armendwallthick, -armendbasethick])
       cube([length, totalwidth, totalheight]);
@@ -854,10 +938,10 @@ module FilamentGuideArmPrint(){ ////toplevel
     FilamentGuideArm();
 }
 
-module Demo(){
-  translate([-hubeffrad-30,50,0]) Hub();
+module Demo(){ ////toplevel
+  translate([-real_exteffrad,-20,0]) Hub();
   ArmEnd();
-  translate([0,50,0]) FilamentCup();
+  translate([ratchettooth*2, 30, 0]) FilamentCup();
 }
 
 //ArmEnd();