From: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Date: Wed, 6 Mar 2019 15:17:22 +0000 (+0100)
Subject: wing tube support (TODO: diag struts are too thick)
X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?p=things.git;a=commitdiff_plain;h=8166e64fdded61a735c34502db86444fc5c0c6fe

wing tube support (TODO: diag struts are too thick)
---

diff --git a/wing-tube-support.scad b/wing-tube-support.scad
new file mode 100644
index 0000000..d07bd1e
--- /dev/null
+++ b/wing-tube-support.scad
@@ -0,0 +1,99 @@
+eps = 0.01;
+infty = 200;
+
+wall = 1.5;
+thin_wall = 0.6;
+
+tube_d = 10;
+tube_zoff = thin_wall + 3;
+
+base_w = 60;
+base_l = 45;
+
+/*
+module body() {
+	hull() {
+//		translate([-fuse_tube_d/2-wall, -fuse_tube_l/2, 0])
+//			cube([fuse_tube_d + 2*wall, fuse_tube_l, fuse_tube_d + 2*wall]);
+		translate([0, fuse_tube_l/2, fuse_tube_d/2+wall])
+		rotate([90, 0, 0])
+			cylinder(r = fuse_tube_d/2+wall, h = fuse_tube_l);
+		translate([-fuse_tube_d/2-wall, -base_l/2+wall/2, 0])
+			cube([fuse_tube_d + 2*wall, base_l-wall, thin_wall]);
+	}
+}
+
+module holder() {
+	difference() {
+		body();
+		translate([0, infty/2, fuse_tube_d/2+wall])
+		rotate([90, 0, 0])
+			cylinder(r = fuse_tube_d/2, h = infty + 2*eps);
+		translate([-slot_w/2, -infty/2, fuse_tube_d/2+wall])
+			cube([slot_w, infty, fuse_tube_d/2+wall+eps]);
+	}
+}
+*/
+
+module body() {
+	// base
+	// scale([1, base_l/base_w, 1])
+	// cylinder(r = base_w/2, h = thin_wall);
+	translate([-base_w/2, -base_l/2, 0]) cube([base_w, base_l, thin_wall]);
+
+	// side supports
+	for (y = [-1,1]) 
+	for (x = [-1,1])
+	scale([x, y, 1])  hull() {
+		translate([base_w/2-thin_wall, -base_l/2, 0])
+			cube([thin_wall, thin_wall, thin_wall]);
+		translate([-thin_wall/2, -base_l/2, 0])
+			cube([thin_wall, thin_wall, tube_zoff + tube_d-thin_wall]);
+	}
+
+	// diagonal supports
+	for (y = [-1,1]) 
+	for (x = [-1,1])
+	scale([x, y, 1])  hull() {
+		translate([base_w/2-thin_wall, base_l/3, 0])
+			cube([thin_wall, thin_wall, thin_wall]);
+		translate([-thin_wall/2, -base_l/2, 0])
+			cube([thin_wall, thin_wall, tube_zoff + tube_d-thin_wall]);
+	}
+
+	// under the tube supports
+	for (y = [-1,1]) 
+	scale([1, y, 1])  hull() {
+		translate([thin_wall/2, -base_l/4, 0])
+			cube([thin_wall, thin_wall, thin_wall]);
+		translate([-thin_wall/2, -base_l/2, 0])
+			cube([thin_wall, thin_wall, tube_zoff + 2*tube_d/3]);
+	}
+
+	// side bottom tube supports
+	for (y = [-1,1]) 
+	for (x = [-1,1])
+	scale([x, y, 1])  hull() {
+		translate([tube_d/2, base_l/3, 0])
+			cube([thin_wall, base_l/6, tube_zoff + tube_d/2]);
+	}
+
+	// upper cylinder clip
+	for (y = [-1,1])
+	scale([1, y, 1])
+	translate([0, base_l/3, tube_d/2 + tube_zoff])
+	intersection() {
+		rotate([-90, 0, 0])
+			cylinder(r = tube_d/2 + thin_wall, h = base_l/6);
+		translate([-tube_d/2-thin_wall, 0, 0])
+		 	cube([tube_d + 2*thin_wall, base_l/6, tube_d/3]);
+	}
+}
+
+difference() {
+	body();
+	// main tube
+	translate([0, -base_l/2-eps, tube_d/2+tube_zoff])
+	rotate([-90, 0, 0])
+		cylinder(r = tube_d/2, h = base_l + 2*eps);
+}