Initial commit

3 files changed, 98 insertions, 0 deletions

diff --git a/board_bottom.scad b/board_bottom.scad
new file mode 100644
index 0000000..c1fcbfa
--- /dev/null
+++ b/board_bottom.scad
@@ -0,0 +1,3 @@
+use <stagedelta.scad>;
+
+board_bottom();
diff --git a/board_top.scad b/board_top.scad
new file mode 100644
index 0000000..8cd9f12
--- /dev/null
+++ b/board_top.scad
@@ -0,0 +1,3 @@
+use <stagedelta.scad>;
+
+board_top();
diff --git a/stagedelta.scad b/stagedelta.scad
new file mode 100644
index 0000000..f723a2c
--- /dev/null
+++ b/stagedelta.scad
@@ -0,0 +1,92 @@
+beam_inter_distance=1500;
+board_height=18;
+
+beam_intra_distance=200;
+beam_height=2500;
+beam_radius=47.5/2;
+beam_top_r1=35/2;
+beam_top_r2=29/2; beam_top_h2=15; // TODO: measure h2/h3, values are guessed
+beam_top_r3=26/2; beam_top_h3=20;
+beam_top_h4=5;
+
+module triangulate(d) {
+  children();
+  
+  translate([d, 0, 0])
+  rotate(120)
+  children();
+  
+  rotate(60)
+  translate([d, 0, 0])
+  rotate(180)
+  children();
+}
+
+module beam(include_struts=false) {
+  triangulate(beam_intra_distance)
+  union() {
+    cylinder(r=beam_radius, h=beam_height);
+
+    translate([0, 0, beam_height]) {
+      cylinder(r1=beam_top_r1, r2=beam_top_r2, h=beam_top_h2);
+
+      translate([0, 0, beam_top_h2])
+      cylinder(r1=beam_top_r2, r2=beam_top_r2, h=beam_top_h3);
+
+      translate([0, 0, beam_top_h2 + beam_top_h3])
+      cylinder(r1=beam_top_r2, r2=beam_top_r3, h=beam_top_h4);
+    }
+	  
+    if (include_struts)
+    for (i = [0:(2 * beam_intra_distance):(beam_height - 2*beam_intra_distance)])
+    translate([0, 0, i]) {
+      rotate([45, 0, 90])
+	cylinder(r=beam_radius/3, h=beam_intra_distance * sqrt(2));
+
+      translate([0, 0, 2*beam_intra_distance])
+      rotate([135, 0, 90])
+      cylinder(r=beam_radius/3, h=beam_intra_distance * sqrt(2));
+    }
+  }
+}
+
+module board() {
+  hull()
+  for (i = [0,1])
+    translate([i * (beam_inter_distance - 2 * beam_intra_distance), 0, 0])
+    rotate(i*120)
+    triangulate(beam_intra_distance)
+    cylinder(r=2*beam_radius, h=board_height);
+}
+
+module board_bottom() {
+  color("lime")
+  render()
+  difference() {
+    board();
+    translate([0, 0, -beam_height +board_height]) beam(false);
+  }
+}
+
+module board_top() {
+  color("green")
+  render()
+  difference() {
+    board();
+    translate([beam_inter_distance - 3 * beam_intra_distance, 0, -beam_height]) beam(false);
+  }
+}
+
+module printer() {
+  triangulate(beam_inter_distance) {
+    beam(include_struts=true);
+
+    translate([0, 0, beam_height - board_height])
+    board_bottom();
+
+    translate([2 * beam_intra_distance, 0, beam_height])
+    board_top();
+  }
+}
+
+printer();