Added carbon fiber tubing with woven pattern.

utils/tube.scad

@@ -31,3 +31,41 @@ module ring(or, ir) //! Create a ring with specified external and internal radii
 module tube(or, ir, h, center = true) //! Create a tube with specified external and internal radii and height ```h```
     linear_extrude(h, center = center, convexity = 5)
         ring(or, ir);
+
+module woven_tube(or, ir, h, center= true, colour = grey(30), colour2, warp = 2, weft) {//! Create a woven tube with specified external and internal radii, height ```h```, colours, warp and weft
+    colour2 = colour2 ? colour2 : colour * 0.8;
+    weft = weft ? weft : warp;
+    warp_count = max(floor(PI * or / warp), 0.5);
+    angle = 360 / (2 * warp_count);
+
+    module layer(weft) {
+        points = [[ir, weft / 2], [or, weft / 2], [or, -weft / 2], [ir, -weft / 2]];
+        color(colour)
+            for (i = [0 : warp_count])
+                rotate(2 * i * angle)
+                    rotate_extrude(angle = angle)
+                        polygon(points);
+        color(colour2)
+            for (i = [0 : warp_count])
+                rotate((2 * i + 1) * angle)
+                    rotate_extrude(angle = angle)
+                        polygon(points);
+    }
+
+    translate_z(center ? -h / 2 : 0) {
+        weft_count = floor(h / weft);
+        if (weft_count > 0)
+            for (i = [0 : weft_count - 1]) {
+                translate_z(i * weft + weft / 2)
+                    rotate(i * angle)
+                        layer(weft);
+        }
+        remainder = h - weft * weft_count;
+        if (remainder) {
+            translate_z(weft_count * weft + remainder / 2)
+                rotate(weft_count * angle)
+                    layer(remainder);
+        }
+    }
+}
+

vitamins/tubing.scad

@@ -21,6 +21,7 @@
 //! Tubing and sleeving. The internal diameter can be forced to stretch it over something.
 //
 include <../utils/core/core.scad>
+include <../utils/tube.scad>
 
 function tubing_material(type) = type[1]; //! Material description
 function tubing_od(type)       = type[2]; //! Outside diameter
@@ -38,6 +39,10 @@ module tubing(type, length = 15, forced_id = 0, center = true) { //! Draw specif
         vitamin(str("tubing(", type[0], arg(length, 15), "): ", tubing_material(type), " ID ", original_id, "mm x ",length, "mm"));
     else
         vitamin(str("tubing(", type[0], arg(length, 15), "): ", tubing_material(type), " OD ", original_od, "mm ID ", original_id,"mm x ",length, "mm"));
+
+    if(tubing_material(type) == "Carbon fiber")
+        woven_tube(od / 2, id /2, length, colour = tubing_colour(type));
+    else
         color(tubing_colour(type))
             linear_extrude(length, center = center, convexity = 4)
                 difference() {
@@ -45,3 +50,4 @@ module tubing(type, length = 15, forced_id = 0, center = true) { //! Draw specif
                     circle(d = id);
                 }
 }
+

vitamins/tubings.scad

@@ -19,7 +19,7 @@
 
 //
 // Tubing and sleeving
-//
+//                            Description           OD        ID  Colour
 PVC64         = ["PVC64",     "PVC aquarium tubing", 6,        4, [0.8, 0.8, 0.8, 0.75 ]];
 PVC85         = ["PVC85",     "PVC aquarium tubing", 8,        5, [0.8, 0.8, 0.8, 0.75 ]];
 NEOP85        = ["NEOP85",    "Neoprene tubing",     8,        5, [0.2,0.2,0.2]];
@@ -34,7 +34,8 @@ HSHRNK24  = ["HSHRNK24",  "Heatshrink sleeving", 2.8,    2.4, "grey"];
 HSHRNK32      = ["HSHRNK32",  "Heatshrink sleeving", 3.6,    3.2, "grey"];
 HSHRNK64      = ["HSHRNK64",  "Heatshrink sleeving", 6.8,    6.4, "grey"];
 HSHRNK100     = ["HSHRNK100", "Heatshrink sleeving",10.4,   10.0,  [0.2,0.2,0.2]];
+CARBONFIBER10 = ["CBNFIB10",  "Carbon fiber",       10.0,    8.0,  [0.3,0.3,0.3]];
 
-tubings = [PVC64, PVC85, NEOP85, PTFE07, PTFE20, PF7, PTFE2_3, PTFE2_4, PTFE4_6, HSHRNK16, HSHRNK24, HSHRNK64, HSHRNK100];
+tubings = [PVC64, PVC85, NEOP85, PTFE07, PTFE20, PF7, PTFE2_3, PTFE2_4, PTFE4_6, HSHRNK16, HSHRNK24, HSHRNK64, HSHRNK100, CARBONFIBER10];
 
 use <tubing.scad>