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https://github.com/Theaninova/Brick-Monorail.git
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feat: improvements
This commit is contained in:
26
README.md
26
README.md
@@ -5,18 +5,20 @@ Parametric Lego-compatible monorail tracks, designed specifically for 3d printin
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Since the parts are made parametric, you can have any length or curve radius you want,
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but these are the original tracks you can replicate
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| Lego Name | Parameters |
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| ----------------- | ------------------------ |
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| Straight Long | `monorailStraight(l=32)` |
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| Straight Short | `monorailStraight(l=8)` |
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| Curve Long | `monorailCurve90(r=28)` |
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| Curve Short Left | ❌ |
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| Curve Short Right | ❌ |
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| Ramp Upper Part | ❌ |
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| Ramp Lower Part | ❌ |
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| Monoswitch | ❌ |
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| Point Right | ❌ |
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| Point Left | ❌ |
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| Common Name | Supported | Material Cost | Print Time |
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| ------------------- | --------- | ------------- | ---------- |
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| Straight Long/Full | ✓ | | |
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| Straight Short/Half | ✓ | | |
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| Straight Quarter | ✓ | | |
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| Straight 4-studs | ✓ | ~10ct | 15m |
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| Curve Long | ✓ | | |
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| Curve Short Left | ❌ | | |
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| Curve Short Right | ❌ | | |
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| Ramp Upper Part | ❌ | | |
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| Ramp Lower Part | ❌ | | |
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| Monoswitch | ❌ | | |
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| Point Right | ❌ | | |
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| Point Left | ❌ | | |
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## Design differences
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116
track.scad
116
track.scad
@@ -1,15 +1,19 @@
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include <BOSL2/std.scad>;
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include <BOSL2/beziers.scad>;
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Type="straight"; // [straight, curve]
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// Enable built-in support for 3d printing
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Support=true;
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// Supports are generated with respect to the layer height
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LayerHeight=0.2; // [0.05,0.1,0.2]
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// Only applies to straight tracks
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Length=8; // [4:1:56]
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// Only applies to curves
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Radius=28; // [4:1:36]
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// The angle at which the curve starts
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StartAngle=0; // [0:15:360]
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// The angle at which the curve ends
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EndAngle=45; // [0:15:360]
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// The angle at the y- axis
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StartAngle=45; // [0:15:90]
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// The angle at the y+ axis
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EndAngle=0; // [0:15:90]
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module __CustomizerLimit__() {}
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@@ -65,23 +69,26 @@ module brickSlot(w=1, l=1, h=3) {
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cube([$stud, $stud, $studHeight * 2], anchor=BOTTOM);
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}
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module endCapStraight() {
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module endCapStraight(includeRail=true) {
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$width = $baseWidth - $plate * 2;
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union() {
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difference() {
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union() {
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cube([$width, $tile * 2, $tile], anchor=CENTER);
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difference() {
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mirror_copy([0, 1, 0])
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translate([0, $tile / 2, 0])
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cyl(l=$width + $studHeight * 2 + $LDU / 2, d=$stud + $LDU, orient=LEFT, $fn=24);
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mirror_copy([1, 0, 0])
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translate([$tile * 2, 0, -$stud / 2 - 0.2])
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rotate([0, -7, 0])
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cube([$studHeight * 10, $tile * 4, $LDU], anchor=BOTTOM+RIGHT);
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}
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mirror_copy([0, 1, 0])
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translate([0, $tile / 2, 0])
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cyl(l=$width + $studHeight * 2 + $LDU / 2, d=$stud, orient=LEFT, $fn=24);
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translate([$tile, -$tile, 0]) cube([8 * $LDU, $LDU, $tile], anchor=LEFT+BACK);
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if (Support) {
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mirror_copy([1, 0, 0]) difference() {
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translate([$tile * 2 - $studHeight, 0, -$tile / 2]) cube([$LDU * 3, $tile * 2 - $LDU - 2, $LDU * 6], anchor=BOTTOM+RIGHT);
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mirror_copy([0, 1, 0])
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translate([0, $tile / 2, 0])
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cyl(l=$width + $studHeight * 2 + $LDU / 2, d=$stud + LayerHeight * 2, orient=LEFT, $fn=24);
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}
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}
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}
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// Brick slots
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mirror_copy([1, 0, 0])
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@@ -106,53 +113,41 @@ module endCapStraight() {
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cyl(d=$fillet, h=$tile, $fn=12);
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}
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// Rail
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translate([0, $teethTolerance / 2, $tile / 2]) cuboid([$teethRailWidth, $tile * 2 - $teethTolerance, $plate], anchor=BOTTOM);
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translate([0, -$tile, $tile / 2]) group() {
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for (i = [0:(2 * $teeth - 1)]) {
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translate([0, i * $teethWidth, 0]) tooth();
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}
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};
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if (includeRail) {
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// Rail
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translate([0, $teethTolerance / 2, $tile / 2]) cuboid([$teethRailWidth, $tile * 2 - $teethTolerance, $plate], anchor=BOTTOM);
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translate([0, -$tile, $tile / 2]) group() {
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for (i = [0:(2 * $teeth - 1)]) {
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translate([0, i * $teethWidth, 0]) tooth();
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}
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};
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}
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}
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}
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module monorailCurve(p0, p1, p2, resolution=512) {
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union() {
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/*translate([r * $tile, $tile, 0]) endCapStraight();
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translate([$tile, r * $tile, 0]) rotate(-90) endCapStraight();
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module monorailCurve(r=28, sa, ea, p1) {
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$n_teeth = round((PI * r * $tile) / (360 / abs(-sa - ea)));
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angle = [180 - ea, 180 + sa];
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points = arc($n_teeth, r=(r * $tile), angle=angle);
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$radius = (r - 2) * $tile;*/
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bez = [p0, p1, p2];
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debug_bezier(bez, N=len(bez)-1);
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$n_teeth = round(bezier_length(bez) / $tile * $teeth);
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echo($n_teeth);
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$points = bezier_curve(bez, $n_teeth);
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translate($points[0]) rot(from=[0, 1, 0], to=bezier_tangent(bez, 0)) fwd($tile) endCapStraight();
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translate($points[len($points) - 1]) rot(from=[0, -1, 0], to=bezier_tangent(bez, 1)) fwd($tile) endCapStraight();
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path_sweep([
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[-$teethRailWidth / 2, $tile / 2 + $plate],
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[-$teethRailWidth / 2, $tile / 2],
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[-2 * $tile, $tile / 2],
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[-2 * $tile, -$tile / 2],
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[2 * $tile, -$tile / 2],
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[2 * $tile, $tile / 2],
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[$teethRailWidth / 2, $tile / 2],
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[$teethRailWidth / 2, $tile / 2 + $plate],
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], $points, tangent=bezier_tangent(bez, [0:1/$n_teeth:1]));
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translate([0, 0, $tile / 2]) path_copies($points, n=$n_teeth) rotate([-90, 90, 0]) tooth();
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//extrude_2d_shapes_along_bezier(path) square([4 * $tile, $tile]);
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/*translate([2 * $tile, 2 * $tile]) intersection() {
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arced_slot(r=$radius, h=$tile, sd=4 * $tile, sa=sa, ea=ea, $fn=resolution);
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translate([r * $tile, 0, 0]) union() {
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translate(points[0]) rot(180 - ea) back($tile) endCapStraight(includeRail=false);
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translate(points[len(points) - 1]) rot(sa) back($tile) endCapStraight(includeRail=false);
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difference() {
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path_sweep([
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[-$teethRailWidth / 2, $tile / 2 + $plate],
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[-$teethRailWidth / 2, $tile / 2],
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[-2 * $tile, $tile / 2],
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[-2 * $tile, -$tile / 2],
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[2 * $tile, -$tile / 2],
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[2 * $tile, $tile / 2],
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[$teethRailWidth / 2, $tile / 2],
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[$teethRailWidth / 2, $tile / 2 + $plate],
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], points);
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translate(points[0]) rot(-ea) cube([$tile * 6, $tile * 4, $tile], anchor=CENTER);
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translate(points[len(points) - 1]) rot(sa) cube([$tile * 6, $tile * 4, $tile], anchor=CENTER);
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}
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translate([2 * $tile, 2 * $tile, $tile / 2])
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arced_slot($radius, h=$plate, sd=$teethRailWidth, align=V_TOP, sa=sa, ea=ea, $fn=resolution);
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translate([2 * $tile, 2 * $tile, $tile / 2])
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arc_of(n = round(((PI * $radius) / (180 / (ea - sa))) / $tile * $teeth), r=(r - 2) * $tile, rot=true, sa=sa, ea=ea, $fn=resolution)
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tooth();*/
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translate([0, 0, $tile / 2]) arc_copies($n_teeth, r=(r * $tile), sa=angle[0], ea=angle[1]) tooth();
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}
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}
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@@ -172,10 +167,11 @@ module monorailStraight(l) {
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}
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}
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if (Type == "straight")
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if (EndAngle == 0 && StartAngle == 0)
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monorailStraight(l=Length);
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else if (Type == "curve")
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monorailCurve(p0=[0, 0, 0], p1=[5, 40, 0], p2=[80, 80, 0]);
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else
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monorailCurve(Radius, sa=StartAngle, ea=EndAngle);
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// endCapStraight();
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// translate([28.75, -232, -5.75]) rotate([0, 0, 90]) import("straight.stl");
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//translate([28.75, -232, -5.75]) rotate([0, 0, 90]) import("4dbrix_curve.stl");
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