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NopSCADlib
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Simplified some of the code in box.scad in response to comments from SCA2D.

This commit is contained in:
Chris Palmer 2020-11-27 18:23:44 +00:00
parent 773a53829f
commit 9bb9f09dca
1 changed files with 40 additions and 27 deletions
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67
printed/box.scad
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@ -121,11 +121,12 @@ module grill(width, height, r = 1000, poly = false, h = 0) { //! A staggered arr
module box_corner_profile_2D(type) { //! The 2D shape of the corner profile.
t = box_sheet_slot(type);
inset = box_corner_gap(type) + box_profile_overlap(type);
difference() {
union() {
quadrant(box_hole_inset(type) + box_boss_r(type), box_boss_r(type)); // inside corner
translate([box_corner_gap(type) + box_profile_overlap(type), box_corner_gap(type) + box_profile_overlap(type)])
translate([inset, inset])
rotate(180)
quadrant(box_profile_overlap(type) + box_corner_rad(type), box_corner_rad(type)); // outside corner
}
@ -212,33 +213,39 @@ module box_bezel(type, bottom) { //! Generates top and bottom bezel STLs
feet = bottom && box_feet(type);
t = box_sheet_slot(type);
outset = box_outset(type);
inset = box_inset(type);
inner_r = box_sheet_r(type);
foot_height = box_corner_gap(type) + sheet_thickness(box_base_sheet(type)) + washer_thickness(box_washer(type)) + screw_head_height(box_screw(type)) + box_profile_overlap(type) + 2;
cgap = box_corner_gap(type);
foot_height = cgap + sheet_thickness(box_base_sheet(type)) + washer_thickness(box_washer(type)) + screw_head_height(box_screw(type)) + box_profile_overlap(type) + 2;
foot_length = box_corner_rad(type) * 2;
height = box_bezel_height(type, bottom);
foot_extension = foot_height - height;
difference() {
w = box_width(type);
d = box_depth(type);
translate_z(-box_profile_overlap(type)) difference() {
rounded_rectangle([box_width(type) + 2 * outset, box_depth(type) + 2 * outset, feet ? foot_height : height], box_corner_rad(type), false);
tw = w + 2 * outset;
td = d + 2 * outset;
rounded_rectangle([tw, td, feet ? foot_height : height], box_corner_rad(type), false);
//
// Remove edges between the feet
//
if(feet)
hull() {
translate_z(height + 0.5)
cube([box_width(type) - 2 * foot_length, box_depth(type) + 2 * outset + 1, 1], center = true);
cube([w - 2 * foot_length, td + 1, 1], center = true);
translate_z(foot_height + 1)
cube([box_width(type) - 2 * (foot_length - foot_extension), box_depth(type) + 2 * outset + 1, 1], center = true);
cube([w - 2 * (foot_length - foot_extension), td + 1, 1], center = true);
}
if(feet)
hull() {
translate_z(height + 0.5)
cube([box_width(type) + 2 * outset + 1, box_depth(type) - 2 * foot_length, 1], center = true);
cube([tw + 1, d - 2 * foot_length, 1], center = true);
translate_z(foot_height + 1)
cube([box_width(type) + 2 * outset + 1, box_depth(type) - 2 * (foot_length - foot_extension), 1], center = true);
cube([tw + 1, d - 2 * (foot_length - foot_extension), 1], center = true);
}
}
//
@ -247,28 +254,28 @@ module box_bezel(type, bottom) { //! Generates top and bottom bezel STLs
translate_z(-box_profile_overlap(type))
linear_extrude(2 * box_profile_overlap(type), center = true)
for(i = [-1, 1]) {
translate([i * (box_width(type) / 2 + t / 2 - sheet_slot_clearance / 2), 0])
square([t, box_depth(type) - 2 * box_corner_gap(type)], center = true);
translate([i * (w + t - sheet_slot_clearance) / 2, 0])
square([t, d - 2 * cgap], center = true);
translate([0, i * (box_depth(type) / 2 + t / 2 - sheet_slot_clearance / 2)])
square([box_width(type) - 2 * box_corner_gap(type), t], center = true);
translate([0, i * (d + t - sheet_slot_clearance) / 2])
square([w - 2 * cgap, t], center = true);
}
//
// recess for top / bottom panel
//
translate_z(box_corner_gap(type))
rounded_rectangle([box_width(type) + bezel_clearance, box_depth(type) + bezel_clearance, height], inner_r + bezel_clearance / 2, false);
translate_z(cgap)
rounded_rectangle([w + bezel_clearance, d + bezel_clearance, height], inner_r + bezel_clearance / 2, false);
//
// leave plastic over the corner profiles
//
translate_z(-box_profile_overlap(type) - 1)
linear_extrude(box_profile_overlap(type) + box_corner_gap(type) + 2)
linear_extrude(box_profile_overlap(type) + cgap + 2)
union() {
difference() {
square([box_width(type) - 2 * box_inset(type),
box_depth(type) - 2 * box_inset(type)], center = true);
square([w - 2 * inset,
d - 2 * inset], center = true);
box_corner_quadrants(type, box_width(type), box_depth(type));
box_corner_quadrants(type, w, d);
}
box_screw_hole_positions(type)
poly_circle(screw_clearance_radius(box_screw(type)));
@ -291,7 +298,9 @@ module box_bezel_section(type, bottom, rows, cols, x, y) { //! Generates interlo
dw = bw - 2 * dowel_wall;
dh = box_bezel_height(type, bottom) - dowel_h_wall;
dh2 = box_profile_overlap(type) + box_corner_gap(type) - dowel_h_wall;
profile_overlap = box_profile_overlap(type);
dh2 = profile_overlap + box_corner_gap(type) - dowel_h_wall;
end_clearance = 0.5;
module male() {
@ -299,14 +308,14 @@ module box_bezel_section(type, bottom, rows, cols, x, y) { //! Generates interlo
linear_extrude(dowel_length - 2 * end_clearance, center = true)
difference() {
union() {
h = dh - layer_height;
h1 = dh - layer_height;
h2 = dh2 - layer_height;
hull() {
translate([bw / 2, h / 2])
square([dw - 1, h], center = true);
translate([bw / 2, h1 / 2])
square([dw - 1, h1], center = true);
translate([bw / 2, (h - 1) / 2])
square([dw, h - 1], center = true);
translate([bw / 2, (h1 - 1) / 2])
square([dw, h1 - 1], center = true);
}
hull() {
@ -318,7 +327,7 @@ module box_bezel_section(type, bottom, rows, cols, x, y) { //! Generates interlo
}
}
translate([bw2 / 2, 0])
square([box_sheet_slot(type), 2 * box_profile_overlap(type)], center = true);
square([box_sheet_slot(type), 2 * profile_overlap], center = true);
}
}
@ -359,7 +368,7 @@ module box_bezel_section(type, bottom, rows, cols, x, y) { //! Generates interlo
render() difference() {
union() {
clip(xmin = 0, xmax = w, ymin = 0, ymax = h)
translate([tw / 2 - x * w, th / 2 - y * h, box_profile_overlap(type)])
translate([tw / 2 - x * w, th / 2 - y * h, profile_overlap])
box_bezel(type, bottom);
if(x < cols - 1 && y == 0)
@ -419,10 +428,14 @@ module box_bezel_section(type, bottom, rows, cols, x, y) { //! Generates interlo
}
}
module box_screw_hole_positions(type)
module box_screw_hole_positions(type) {
inset = box_hole_inset(type);
w = box_width(type) / 2 - inset;
d = box_depth(type) / 2 - inset;
for(x = [-1, 1], y = [-1, 1])
translate([x * (box_width(type) / 2 - box_hole_inset(type)), y * (box_depth(type) / 2 - box_hole_inset(type))])
translate([x * w, y * d])
children();
}
module box_base_blank(type) { //! Generates a 2D template for the base sheet
dxf("box_base");