This is a collection of assorted astronomy related parts
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/*
* Astro Parts -- Orion SpaceProbe 130EQ Object Cap
*
* Copyright (c) 2021 Steve Cross <flip@foxhollow.cc>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
// [unit: mm]
outer_depth = 35; // actual: 35.0 mm
// [unit: mm]
outer_diameter = 170; // actual: 167.0 mm
// [unit: mm]
wall_thickness = 2; // [1:1:6]
difference() {
cylinder(h=outer_depth+wall_thickness, d=outer_diameter + (wall_thickness*3));
translate([0, 0, wall_thickness])
cylinder(h=outer_depth+wall_thickness, d=outer_diameter);
};
$fn = 360;