material mixer: embedded pushfits support

1 files changed, 31 insertions, 9 deletions

diff --git a/mixer.scad b/mixer.scad
index 3200023..7b2e5d4 100644
--- a/mixer.scad
+++ b/mixer.scad
@@ -1,2 +1,2 @@
-layer_height=0.2; extrusion_width=0.4;
+layer_height=0.2; extrusion_width=0.45;
 epsilon=0.01;
@@ -17,2 +17,5 @@ module the_mixer(
  pushfit_d = 10, pushfit_h = 10,
+ pushfit_type = "threaded", // threaded|embedded
+ pushfit_ring_h = 4.7, // height of embedded pushfit ring
+ pushfit_insert_d = 8, // diameter of pushfit insert legs hole
  liner_d = 4, liner_id = 2,
@@ -21,4 +24,4 @@ module the_mixer(
 
- interpushfit = 2*extrusion_width, // space between two pushfit's threads
- pushfit_s = 2, // shell around pushfit threads
+ interpushfit = 2*extrusion_width, // space between two pushfit holes
+ pushfit_s = 2, // shell around pushfit holes
  output_l = 4, // length of output after before pushfit
@@ -37,2 +40,11 @@ module the_mixer(
  }
+ module pushfit() {
+  if(pushfit_type=="threaded") {
+   pushfit_thread(h=pushfit_h);
+  }else if(pushfit_type=="embedded") {
+   translate([0,0,pushfit_h-pushfit_ring_h])
+   cylinder(d=pushfit_d,h=pushfit_ring_h,$fn=pushfit_d*PI*2);
+   cylinder(d=pushfit_insert_d,h=pushfit_h,$fn=pushfit_insert_d*PI*2);
+  }
+ }
  
@@ -42,3 +54,4 @@ module the_mixer(
  pfR = pushfit_d/2+pfrx;      // radius of pushfit with margin
- pfo = pfR/tan(join_angle/2); // pushfit thread ofset
+ pfoo = pushfit_type=="threaded" ? 0 : (pushfit_h-pushfit_ring_h); // offset of pushfit offset
+ pfo = pfR/tan(join_angle/2)-pfoo; // pushfit thread ofset
 
@@ -61,3 +74,3 @@ module the_mixer(
    translate([0,pfo,0]) rotate([-90,0,0])
-   pushfit_thread(h=pushfit_h);
+   pushfit();
   }
@@ -67,3 +80,3 @@ module the_mixer(
    translate([0,0,output_l])
-   pushfit_thread(h=pushfit_h);
+   pushfit();
   }
@@ -81,5 +94,14 @@ module the_mixer(
 
-if(false) {
+module this() {
+ the_mixer(
+  pushfit_type="embedded",
+  pushfit_d = 12,
+  pushfit_h = 7,
+  interpushfit = extrusion_width
+ );
+}
+
+if(!false) {
  difference() {
-  the_mixer();
+  this();
   cylinder(d=100,h=100);
@@ -87,2 +109,2 @@ if(false) {
 }else
- the_mixer();
+ this();