Commit 7ae3e8fc4c981daeb0cebcd85af3f36e20c34d36 - h1a

new design for guide that's 3D printable and more tolerant of tube size variation haldean 1 year, 6 months ago

3 changed file(s) with 25 addition(s) and 31 deletion(s). Raw diff Collapse all Expand all

+12

-12

cap.scad less more

0	0	include <dims.scad>
	1
	2	module diag(h) {
	3	d = sqrt(2 * itid * itid)/2;
	4	wt = 1.8;
	5	linear_extrude(height=h, center=false, scale=(itid-1)/itid)
	6	polygon([[-d, 0], [-d+wt, wt], [d-wt, wt],
	7	[d, 0], [d-wt, -wt], [-d+wt, -wt]]);
	8	}
1	9
2	10	module cap() {
3	11	difference() {
4	12	union() {
5	13	translate([0, 0, cap_height-eps])
6		cylinder(h=cap_depth + eps, r1=otid / 2, r2=(otid - 2) / 2);
	14	cylinder(h=cap_depth + eps, r1=otid / 2, r2=(otid - 2) / 2);
7	15	cylinder(h=cap_height, r=otod / 2);
8	16	}
9	17	translate([0, 0, cap_height])
10	18	cylinder(h=cap_depth+eps, r=otid / 2 - wall_thickness);
11	19	}
12	20
13		module diag() {
14		d = sqrt(2 * itid * itid)/2;
15		wt = 1.5;
16		linear_extrude(height=cap_height+cross_depth, center=false, scale=(itid-1)/itid)
17		polygon([[-d, 0], [-d+wt, wt], [d-wt, wt],
18		[d, 0], [d-wt, -wt], [-d+wt, -wt]]);
19		}
20
21	21	union() {
22		rotate([0,0,45]) diag();
23		rotate([0,0,-45]) diag();
	22	rotate([0,0,45]) diag(cap_height+cross_depth);
	23	rotate([0,0,-45]) diag(cap_height+cross_depth);
24	24	}
25	25	}
26	26
27		cap();⏎
	27	cap();

-2

dims.scad less more

+11

-17

guide.scad less more

0	0	include <dims.scad>
	1	use <cap.scad>
1	2
2	3	brace_w = 10;
3	4	brace_h = 4;
4	5
5	6	module brace() {
6		translate([-otid/2, -brace_w/2, cap_depth - brace_h])
	7	translate([-otid/2, -brace_w/2, -cap_height])
7	8	cube([otid, brace_w, brace_h]);
8	9	}
9	10

11	12	union() {
12	13	difference() {
13	14	union() {
14		cylinder(h=cap_depth, r=otid/2);
	15	cylinder(h=cap_depth, r1=otid / 2, r2=(otid - 2) / 2);
15	16	translate([0, 0, -cap_height])
16	17	cylinder(h=cap_height, r=otod/2);
17	18	}
18	19	translate([0, 0, -cap_height-eps]) {
19	20	cylinder(h=cap_height+cap_depth+2*eps,
20	21	r=otid/2-wall_thickness);
21		translate([-channel_w/2, 0, 0])
22		cube([channel_w, otod/2+eps, cap_height+3*eps]);
	22	rotate([90, 0, 0])
	23	cylinder(h = otod/2 + eps, r = channel_w/2);
23	24	}
24	25	}
25	26	intersection() {
26		difference() {
27		union() {
28		rotate([0, 0, 45]) brace();
29		rotate([0, 0, -45]) brace();
30		translate([-itod/2, -itod/2, -wall_thickness])
31		linear_extrude(height=cap_depth+wall_thickness)
32		offset(wall_thickness)
33		square([itod, itod]);
	27	union() {
	28	rotate([0, 0, 45]) brace();
	29	rotate([0, 0, -45]) brace();
	30	translate([0, 0, -cap_height]) {
	31	rotate([0, 0, 45]) diag(cap_height + cap_depth);
	32	rotate([0, 0, -45]) diag(cap_height + cap_depth);
34	33	}
35		translate([0, 0, -eps])
36		linear_extrude(height=cap_depth + 2 * eps)
37		translate([-itod/2+itcr, -itod/2+itcr])
38		offset(itcr)
39		square([itod-2itcr, itod-2itcr]);
40	34	}
41	35	translate([0, 0, -cap_height])
42	36	cylinder(h=cap_depth+cap_height, r=otid/2 - wall_thickness / 2);