filamenttrestle thicker block

[reprap-play.git] / filamenttrestle.scad

diff --git a/filamenttrestle.scad b/filamenttrestle.scad
index 7d8436a9e9ab857ffc000e3acbd736d5c19733db..9d9e41f6a54000a16213061ee07c1b10a9804850 100644 (file)
--- a/filamenttrestle.scad
+++ b/filamenttrestle.scad
@@ -1,6 +1,8 @@
 // -*- C -*-
 
 spoolwidth = 80; // fixme needs to be measured
+trestleheight = 80; // fixme needs to be checked
+trestlebase = 80; // fixme needs to be checked
 
 include <doveclip.scad>
 
@@ -10,6 +12,40 @@ barradz = 7;
 guidewidth = 3;
 guiderad = 20;
 
+plugl = 12;
+plugwmin = 3;
+plugh = 10;
+plugslope = 0.5;
+plugwmax = plugwmin + plugh * plugslope * 2;
+
+trestlelegw = 10;
+trestlebaseh = 10;
+trestleplugd = 1;
+
+topblockthick = 4;
+topblockbasedepth = 4;
+
+pinbasew = 3;
+pinminh = 1.0;
+pinmaxh = 3;
+pindh = 1.0;
+pindwidth = 1.0;
+
+module Plug(d=0){
+  dw = d;
+  dh = d;
+  a = atan(plugslope);
+  bdx = dw / cos(a);
+  tdy = dh;
+  tdx = bdx + dh * plugslope;
+  translate([-d,0,0]) rotate([90,0,90]) linear_extrude(height=plugl+0.1+d*2){
+    polygon([[-(plugwmin/2 + bdx),  0],
+            [-(plugwmax/2 + tdx),  plugh + tdy],
+            [+(plugwmax/2 + tdx),  plugh + tdy],
+            [+(plugwmin/2 + bdx),  0]]);
+  }
+}
+
 module Bar(){
   spoolw = spoolwidth + spoolwidthgap*2;
   barz = barradz * 0.5;
@@ -24,6 +60,8 @@ module Bar(){
          translate([spoolw/2,0,0])
            rotate([0,90,0]) cylinder(r=guiderad, h=guidewidth, $fn=60);
        }
+       translate([spoolw/2 + guidewidth, 0, 0])
+         Plug();
       }
     }
     translate([-biggestw/2, -50, 0])
@@ -31,4 +69,58 @@ module Bar(){
   }
 }
 
-Bar();
+module Trestle(){
+  legang = atan2(trestlebase/2, trestleheight);
+  eplen = sqrt(trestleheight*trestleheight + trestlebase*trestlebase*0.25);
+  topblockw = plugwmax + trestleplugd*2 + topblockthick*2;
+
+  pinholebasew = pinbasew + pindwidth;
+  pinholeh =     pinminh +  pindh;
+
+  difference(){
+    union(){
+      for (mir=[0,1]) {
+       mirror([mir,0,0]) {
+         rotate([0,0, -90-legang])
+           ExtenderPillars(length=eplen+trestlelegw,
+                           width=trestlelegw,
+                           height=plugl,
+                           baseweb=true);
+
+         translate([-trestlebase/2, -trestleheight, 0])
+           cylinder(r=trestlelegw/2*1.2, h=plugl);
+       }
+      }
+      translate([-topblockw/2, -topblockbasedepth, 0])
+       cube([topblockw, topblockbasedepth + plugh + topblockthick, plugl]);
+
+      translate([-trestlebase/2, -trestleheight, 0])
+       ExtenderPillars(length=trestlebase, width=trestlebaseh*2, height=plugl);
+    }
+    translate([-300, -trestleheight-50, -1])
+      cube([600, 50, plugl+2]);
+
+    rotate([-90,-90,0])
+      Plug(d=trestleplugd);
+
+    for (rot=[0,180]) {
+      translate([0,0,plugl/2]) rotate([0,rot,0]) translate([0,0,-plugl/2]) {
+       translate([-(topblockw*0.25+1),
+                  plugh + pindh - (pinmaxh - pinminh)/2,
+                  (plugl - pinholebasew*2)/3]) rotate([0,90,0]) {
+         linear_extrude(height = topblockw*1.0+2) {
+           polygon([[-1.0 * pinholebasew, -0.01],
+                    [-0.5 * pinholebasew, pinholeh],
+                    [ 0                 , -0.01]]);
+         }
+       }
+      }
+    }
+  }
+}
+
+//Bar();
+Trestle();
+
+//Plug(d=1);
+//ExtenderPillars(80,12,8, baseweb=true);