From: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Date: Wed, 6 Mar 2019 08:40:54 +0000 (+0100)
Subject: pencil box/stand
X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=commitdiff_plain;h=2c9ee5585f49edcaf13ba0f89fb7cbff986afe21;p=things.git

pencil box/stand
---

diff --git a/pencil_stand.scad b/pencil_stand.scad
new file mode 100644
index 0000000..5eeb71e
--- /dev/null
+++ b/pencil_stand.scad
@@ -0,0 +1,86 @@
+eps = 0.01;
+infty = 200;
+
+thin_wall = 0.5;
+wall = 1.5;
+
+body_d = 60;
+body_h = 80;
+
+
+front_hex_r = body_d/8;
+rear_hex_r = body_d/5;
+rear_hex_xoff = -5;
+
+module hex_wall() {
+
+difference() {
+	cube([body_h, body_d, 2]);
+	for (y = [0:12])
+	for (x = [0:7]) {
+		translate([(2+2*sin(30))*y*front_hex_r, front_hex_r*sin(60)*(1+2*x), -eps])
+			cylinder(r1 = front_hex_r-2, r2 = front_hex_r, 2+2*eps, $fn = 6);
+		translate([(2+2*sin(30))*y*front_hex_r+(1+sin(30))*front_hex_r, front_hex_r*sin(60)*(2*x), -eps])
+			cylinder(r1 = front_hex_r-2, r2 = front_hex_r, 2+2*eps, $fn = 6);
+	}
+}
+
+scale([1, 1, -1])
+difference() {
+	cube([80, 60, 2]);
+	translate([rear_hex_xoff, 0, 0])
+	for (y = [0:12])
+	for (x = [0:7]) {
+		translate([(2+2*sin(30))*y*rear_hex_r, rear_hex_r*sin(60)*(1+2*x), -eps])
+			cylinder(r1 = rear_hex_r-2, r2 = rear_hex_r, 2+2*eps, $fn = 6);
+		translate([(2+2*sin(30))*y*rear_hex_r+(1+sin(30))*rear_hex_r, rear_hex_r*sin(60)*(2*x), -eps])
+			cylinder(r1 = rear_hex_r-2, r2 = rear_hex_r, 2+2*eps, $fn = 6);
+	}
+}
+}
+
+
+rotate([0, -90, 0]) hex_wall();
+translate([body_d, body_d, 0]) scale([-1, -1, 1]) rotate([0, -90, 0]) hex_wall();
+rotate([0, -90, -90]) scale([1, 1, -1]) hex_wall();
+translate([body_d, body_d, 0]) rotate([0, -90, -90]) scale([1, -1, 1]) hex_wall();
+
+cube([body_d, body_d, 2]);
+
+module corner() {
+	translate([-2, -2, 0]) cube([4, 4, body_h]);
+}
+
+corner();
+translate([body_d, 0, 0]) corner();
+translate([0, body_d, 0]) corner();
+translate([body_d, body_d, 0]) corner();
+
+module upper() {
+	intersection() {
+		rotate([0, 90, 0])
+			cylinder(r = 2, h = body_d, $fn = 4);
+		translate([-eps, -2, -2-eps]) cube([body_d, 4, 2+eps]);
+	}
+}
+translate([0, 0, body_h]) upper();
+translate([0, body_d, body_h]) upper();
+translate([0, body_d, body_h]) rotate([0, 0, -90]) upper();
+translate([body_d, body_d, body_h]) rotate([0, 0, -90]) upper();
+
+scale([1, 1, -1]) {
+translate([0, 0, 0]) upper();
+translate([0, body_d, 0]) upper();
+translate([0, body_d, 0]) rotate([0, 0, -90]) upper();
+translate([body_d, body_d, 0]) rotate([0, 0, -90]) upper();
+}
+
+module mid_wall() {
+	translate([-thin_wall/2, 0, 0]) cube([thin_wall, body_d, body_h]);
+}
+
+mid_wall();
+rotate([0, 0, -90]) mid_wall();
+translate([body_d, 0, 0]) mid_wall();
+translate([0, body_d, 0]) rotate([0, 0, -90]) mid_wall();
+