mirror of
https://github.com/BelfrySCAD/BOSL2.git
synced 2024-12-29 16:29:40 +00:00
walls.scad docs cleanup.
This commit is contained in:
Garth Minette
parent
dd4b67a057
commit
4dc75bb7d3
1 changed files with 158 additions and 234 deletions
392
walls.scad
392
walls.scad
|
|
@ -12,44 +12,71 @@
|
|||
// Section: Walls
|
||||
|
||||
|
||||
// Module: narrowing_strut()
|
||||
//
|
||||
// Description:
|
||||
// Makes a rectangular strut with the top side narrowing in a triangle.
|
||||
// The shape created may be likened to an extruded home plate from baseball.
|
||||
// This is useful for constructing parts that minimize the need to support
|
||||
// overhangs.
|
||||
// Module: sparse_wall()
|
||||
//
|
||||
// Usage:
|
||||
// narrowing_strut(w, l, wall, [ang]);
|
||||
// sparse_wall(h, l, thick, [maxang=], [strut=], [max_bridge=]) [ATTACHMENTS];
|
||||
//
|
||||
// Topics: FDM Optimized, Walls
|
||||
//
|
||||
// Description:
|
||||
// Makes an open rectangular strut with X-shaped cross-bracing, designed to reduce
|
||||
// the need for support material in 3D printing.
|
||||
//
|
||||
// Arguments:
|
||||
// w = Width (thickness) of the strut.
|
||||
// l = Length of the strut.
|
||||
// wall = height of rectangular portion of the strut.
|
||||
// ang = angle that the trianglar side will converge at.
|
||||
// h = height of strut wall.
|
||||
// l = length of strut wall.
|
||||
// thick = thickness of strut wall.
|
||||
// ---
|
||||
// maxang = maximum overhang angle of cross-braces.
|
||||
// strut = the width of the cross-braces.
|
||||
// max_bridge = maximum bridging distance between cross-braces.
|
||||
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `CENTER`
|
||||
// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#subsection-spin). Default: `0`
|
||||
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#subsection-orient). Default: `UP`
|
||||
//
|
||||
// Example:
|
||||
// narrowing_strut(w=10, l=100, wall=5, ang=30);
|
||||
module narrowing_strut(w=10, l=100, wall=5, ang=30, anchor=BOTTOM, spin=0, orient=UP)
|
||||
// See Also: corrugated_wall(), thinning_wall()
|
||||
//
|
||||
// Example: Typical Shape
|
||||
// sparse_wall(h=40, l=100, thick=3);
|
||||
// Example: Thinner Strut
|
||||
// sparse_wall(h=40, l=100, thick=3, strut=2);
|
||||
// Example: Larger maxang
|
||||
// sparse_wall(h=40, l=100, thick=3, strut=2, maxang=45);
|
||||
// Example: Longer max_bridge
|
||||
// sparse_wall(h=40, l=100, thick=3, strut=2, maxang=45, max_bridge=30);
|
||||
module sparse_wall(h=50, l=100, thick=4, maxang=30, strut=5, max_bridge=20, anchor=CENTER, spin=0, orient=UP)
|
||||
{
|
||||
h = wall + w/2/tan(ang);
|
||||
size = [w, l, h];
|
||||
zoff = h/2 - strut/2;
|
||||
yoff = l/2 - strut/2;
|
||||
|
||||
maxhyp = 1.5 * (max_bridge+strut)/2 / sin(maxang);
|
||||
maxz = 2 * maxhyp * cos(maxang);
|
||||
|
||||
zreps = ceil(2*zoff/maxz);
|
||||
zstep = 2*zoff / zreps;
|
||||
|
||||
hyp = zstep/2 / cos(maxang);
|
||||
maxy = min(2 * hyp * sin(maxang), max_bridge+strut);
|
||||
|
||||
yreps = ceil(2*yoff/maxy);
|
||||
ystep = 2*yoff / yreps;
|
||||
|
||||
ang = atan(ystep/zstep);
|
||||
len = zstep / cos(ang);
|
||||
|
||||
size = [thick, l, h];
|
||||
attachable(anchor,spin,orient, size=size) {
|
||||
xrot(90)
|
||||
fwd(h/2) {
|
||||
linear_extrude(height=l, center=true, slices=2) {
|
||||
back(wall/2) square([w, wall], center=true);
|
||||
back(wall-0.001) {
|
||||
yscale(1/tan(ang)) {
|
||||
difference() {
|
||||
zrot(45) square(w/sqrt(2), center=true);
|
||||
fwd(w/2) square(w, center=true);
|
||||
}
|
||||
}
|
||||
yrot(90)
|
||||
linear_extrude(height=thick, convexity=4*yreps, center=true) {
|
||||
difference() {
|
||||
square([h, l], center=true);
|
||||
square([h-2*strut, l-2*strut], center=true);
|
||||
}
|
||||
ycopies(ystep, n=yreps) {
|
||||
xcopies(zstep, n=zreps) {
|
||||
skew(syx=tan(-ang)) square([(h-strut)/zreps, strut], center=true);
|
||||
skew(syx=tan( ang)) square([(h-strut)/zreps, strut], center=true);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -58,27 +85,90 @@ module narrowing_strut(w=10, l=100, wall=5, ang=30, anchor=BOTTOM, spin=0, orien
|
|||
}
|
||||
|
||||
|
||||
// Module: corrugated_wall()
|
||||
//
|
||||
// Usage:
|
||||
// corrugated_wall(h, l, thick, [strut=], [wall=]) [ATTACHMENTS];
|
||||
//
|
||||
// Topics: FDM Optimized, Walls
|
||||
//
|
||||
// Description:
|
||||
// Makes a corrugated wall which relieves contraction stress while still
|
||||
// providing support strength. Designed with 3D printing in mind.
|
||||
//
|
||||
// Arguments:
|
||||
// h = height of strut wall.
|
||||
// l = length of strut wall.
|
||||
// thick = thickness of strut wall.
|
||||
// ---
|
||||
// strut = the width of the cross-braces.
|
||||
// wall = thickness of corrugations.
|
||||
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `CENTER`
|
||||
// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#subsection-spin). Default: `0`
|
||||
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#subsection-orient). Default: `UP`
|
||||
//
|
||||
// See Also: sparse_wall(), thinning_wall()
|
||||
//
|
||||
// Example: Typical Shape
|
||||
// corrugated_wall(h=50, l=100);
|
||||
// Example: Wider Strut
|
||||
// corrugated_wall(h=50, l=100, strut=8);
|
||||
// Example: Thicker Wall
|
||||
// corrugated_wall(h=50, l=100, strut=8, wall=3);
|
||||
module corrugated_wall(h=50, l=100, thick=5, strut=5, wall=2, anchor=CENTER, spin=0, orient=UP)
|
||||
{
|
||||
amplitude = (thick - wall) / 2;
|
||||
period = min(15, thick * 2);
|
||||
steps = quantup(segs(thick/2),4);
|
||||
step = period/steps;
|
||||
il = l - 2*strut + 2*step;
|
||||
size = [thick, l, h];
|
||||
attachable(anchor,spin,orient, size=size) {
|
||||
union() {
|
||||
linear_extrude(height=h-2*strut+0.1, slices=2, convexity=ceil(2*il/period), center=true) {
|
||||
polygon(
|
||||
points=concat(
|
||||
[for (y=[-il/2:step:il/2]) [amplitude*sin(y/period*360)-wall/2, y] ],
|
||||
[for (y=[il/2:-step:-il/2]) [amplitude*sin(y/period*360)+wall/2, y] ]
|
||||
)
|
||||
);
|
||||
}
|
||||
difference() {
|
||||
cube([thick, l, h], center=true);
|
||||
cube([thick+0.5, l-2*strut, h-2*strut], center=true);
|
||||
}
|
||||
}
|
||||
children();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// Module: thinning_wall()
|
||||
//
|
||||
// Usage:
|
||||
// thinning_wall(h, l, thick, [ang=], [braces=], [strut=], [wall=]) [ATTACHMENTS];
|
||||
//
|
||||
// Topics: FDM Optimized, Walls
|
||||
//
|
||||
// Description:
|
||||
// Makes a rectangular wall which thins to a smaller width in the center,
|
||||
// with angled supports to prevent critical overhangs.
|
||||
//
|
||||
// Usage:
|
||||
// thinning_wall(h, l, thick, [ang], [strut], [wall]);
|
||||
//
|
||||
// Arguments:
|
||||
// h = Height of wall.
|
||||
// l = Length of wall. If given as a vector of two numbers, specifies bottom and top lengths, respectively.
|
||||
// thick = Thickness of wall.
|
||||
// wall = The thickness of the thinned portion of the wall. Default: `thick/2`
|
||||
// ---
|
||||
// ang = Maximum overhang angle of diagonal brace.
|
||||
// braces = If true, adds diagonal crossbraces for strength.
|
||||
// strut = The width of the borders and diagonal braces. Default: `thick/2`
|
||||
// wall = The thickness of the thinned portion of the wall. Default: `thick/2`
|
||||
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `CENTER`
|
||||
// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#subsection-spin). Default: `0`
|
||||
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#subsection-orient). Default: `UP`
|
||||
//
|
||||
// See Also: sparse_wall(), corrugated_wall(), thinning_triangle()
|
||||
//
|
||||
// Example: Typical Shape
|
||||
// thinning_wall(h=50, l=80, thick=4);
|
||||
// Example: Trapezoidal
|
||||
|
|
@ -238,17 +328,20 @@ module thinning_wall(h=50, l=100, thick=5, ang=30, braces=false, strut, wall, an
|
|||
|
||||
// Module: thinning_triangle()
|
||||
//
|
||||
// Usage:
|
||||
// thinning_triangle(h, l, thick, [ang=], [strut=], [wall=], [diagonly=], [center=]) [ATTACHMENTS];
|
||||
//
|
||||
// Topics: FDM Optimized, Walls
|
||||
//
|
||||
// Description:
|
||||
// Makes a triangular wall with thick edges, which thins to a smaller width in
|
||||
// the center, with angled supports to prevent critical overhangs.
|
||||
//
|
||||
// Usage:
|
||||
// thinning_triangle(h, l, thick, [ang], [strut], [wall], [diagonly], [center]);
|
||||
//
|
||||
// Arguments:
|
||||
// h = height of wall.
|
||||
// l = length of wall.
|
||||
// thick = thickness of wall.
|
||||
// ---
|
||||
// ang = maximum overhang angle of diagonal brace.
|
||||
// strut = the width of the diagonal brace.
|
||||
// wall = the thickness of the thinned portion of the wall.
|
||||
|
|
@ -258,6 +351,8 @@ module thinning_wall(h=50, l=100, thick=5, ang=30, braces=false, strut, wall, an
|
|||
// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#subsection-spin). Default: `0`
|
||||
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#subsection-orient). Default: `UP`
|
||||
//
|
||||
// See Also: thinning_wall()
|
||||
//
|
||||
// Example: Centered
|
||||
// thinning_triangle(h=50, l=80, thick=4, ang=30, strut=5, wall=2, center=true);
|
||||
// Example: All Braces
|
||||
|
|
@ -298,220 +393,49 @@ module thinning_triangle(h=50, l=100, thick=5, ang=30, strut=5, wall=3, diagonly
|
|||
}
|
||||
|
||||
|
||||
// Module: sparse_strut()
|
||||
//
|
||||
// Description:
|
||||
// Makes an open rectangular strut with X-shaped cross-bracing, designed to reduce
|
||||
// the need for support material in 3D printing.
|
||||
// Module: narrowing_strut()
|
||||
//
|
||||
// Usage:
|
||||
// sparse_strut(h, l, thick, [strut], [maxang], [max_bridge])
|
||||
// narrowing_strut(w, l, wall, [ang=]) [ATTACHMENTS];
|
||||
//
|
||||
// Topics: FDM Optimized
|
||||
//
|
||||
// Description:
|
||||
// Makes a rectangular strut with the top side narrowing in a triangle.
|
||||
// The shape created may be likened to an extruded home plate from baseball.
|
||||
// This is useful for constructing parts that minimize the need to support
|
||||
// overhangs.
|
||||
//
|
||||
// Arguments:
|
||||
// h = height of strut wall.
|
||||
// l = length of strut wall.
|
||||
// thick = thickness of strut wall.
|
||||
// maxang = maximum overhang angle of cross-braces.
|
||||
// max_bridge = maximum bridging distance between cross-braces.
|
||||
// strut = the width of the cross-braces.
|
||||
// w = Width (thickness) of the strut.
|
||||
// l = Length of the strut.
|
||||
// wall = height of rectangular portion of the strut.
|
||||
// ---
|
||||
// ang = angle that the trianglar side will converge at.
|
||||
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `CENTER`
|
||||
// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#subsection-spin). Default: `0`
|
||||
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#subsection-orient). Default: `UP`
|
||||
//
|
||||
// Example: Typical Shape
|
||||
// sparse_strut(h=40, l=100, thick=3);
|
||||
// Example: Thinner Strut
|
||||
// sparse_strut(h=40, l=100, thick=3, strut=2);
|
||||
// Example: Larger maxang
|
||||
// sparse_strut(h=40, l=100, thick=3, strut=2, maxang=45);
|
||||
// Example: Longer max_bridge
|
||||
// sparse_strut(h=40, l=100, thick=3, strut=2, maxang=45, max_bridge=30);
|
||||
module sparse_strut(h=50, l=100, thick=4, maxang=30, strut=5, max_bridge=20, anchor=CENTER, spin=0, orient=UP)
|
||||
// Example:
|
||||
// narrowing_strut(w=10, l=100, wall=5, ang=30);
|
||||
module narrowing_strut(w=10, l=100, wall=5, ang=30, anchor=BOTTOM, spin=0, orient=UP)
|
||||
{
|
||||
zoff = h/2 - strut/2;
|
||||
yoff = l/2 - strut/2;
|
||||
|
||||
maxhyp = 1.5 * (max_bridge+strut)/2 / sin(maxang);
|
||||
maxz = 2 * maxhyp * cos(maxang);
|
||||
|
||||
zreps = ceil(2*zoff/maxz);
|
||||
zstep = 2*zoff / zreps;
|
||||
|
||||
hyp = zstep/2 / cos(maxang);
|
||||
maxy = min(2 * hyp * sin(maxang), max_bridge+strut);
|
||||
|
||||
yreps = ceil(2*yoff/maxy);
|
||||
ystep = 2*yoff / yreps;
|
||||
|
||||
ang = atan(ystep/zstep);
|
||||
len = zstep / cos(ang);
|
||||
|
||||
size = [thick, l, h];
|
||||
attachable(anchor,spin,orient, size=size) {
|
||||
yrot(90)
|
||||
linear_extrude(height=thick, convexity=4*yreps, center=true) {
|
||||
difference() {
|
||||
square([h, l], center=true);
|
||||
square([h-2*strut, l-2*strut], center=true);
|
||||
}
|
||||
ycopies(ystep, n=yreps) {
|
||||
xcopies(zstep, n=zreps) {
|
||||
skew(syx=tan(-ang)) square([(h-strut)/zreps, strut], center=true);
|
||||
skew(syx=tan( ang)) square([(h-strut)/zreps, strut], center=true);
|
||||
}
|
||||
}
|
||||
}
|
||||
children();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// Module: sparse_strut3d()
|
||||
//
|
||||
// Usage:
|
||||
// sparse_strut3d(h, w, l, [thick], [maxang], [max_bridge], [strut]);
|
||||
//
|
||||
// Description:
|
||||
// Makes an open rectangular strut with X-shaped cross-bracing, designed to reduce the
|
||||
// need for support material in 3D printing.
|
||||
//
|
||||
// Arguments:
|
||||
// h = Z size of strut.
|
||||
// w = X size of strut.
|
||||
// l = Y size of strut.
|
||||
// thick = thickness of strut walls.
|
||||
// maxang = maximum overhang angle of cross-braces.
|
||||
// max_bridge = maximum bridging distance between cross-braces.
|
||||
// strut = the width of the cross-braces.
|
||||
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `CENTER`
|
||||
// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#subsection-spin). Default: `0`
|
||||
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#subsection-orient). Default: `UP`
|
||||
//
|
||||
// Example(Med): Typical Shape
|
||||
// sparse_strut3d(h=30, w=30, l=100);
|
||||
// Example(Med): Thinner strut
|
||||
// sparse_strut3d(h=30, w=30, l=100, strut=2);
|
||||
// Example(Med): Larger maxang
|
||||
// sparse_strut3d(h=30, w=30, l=100, strut=2, maxang=50);
|
||||
// Example(Med): Smaller max_bridge
|
||||
// sparse_strut3d(h=30, w=30, l=100, strut=2, maxang=50, max_bridge=20);
|
||||
module sparse_strut3d(h=50, l=100, w=50, thick=3, maxang=40, strut=3, max_bridge=30, anchor=CENTER, spin=0, orient=UP)
|
||||
{
|
||||
|
||||
xoff = w - thick;
|
||||
yoff = l - thick;
|
||||
zoff = h - thick;
|
||||
|
||||
xreps = ceil(xoff/yoff);
|
||||
yreps = ceil(yoff/xoff);
|
||||
zreps = ceil(zoff/min(xoff, yoff));
|
||||
|
||||
xstep = xoff / xreps;
|
||||
ystep = yoff / yreps;
|
||||
zstep = zoff / zreps;
|
||||
|
||||
cross_ang = atan2(xstep, ystep);
|
||||
cross_len = hypot(xstep, ystep);
|
||||
|
||||
supp_ang = min(maxang, min(atan2(max_bridge, zstep), atan2(cross_len/2, zstep)));
|
||||
supp_reps = floor(cross_len/2/(zstep*sin(supp_ang)));
|
||||
supp_step = cross_len/2/supp_reps;
|
||||
|
||||
h = wall + w/2/tan(ang);
|
||||
size = [w, l, h];
|
||||
attachable(anchor,spin,orient, size=size) {
|
||||
intersection() {
|
||||
union() {
|
||||
ybridge = (l - (yreps+1) * strut) / yreps;
|
||||
xcopies(xoff) sparse_strut(h=h, l=l, thick=thick, maxang=maxang, strut=strut, max_bridge=ybridge/ceil(ybridge/max_bridge));
|
||||
ycopies(yoff) zrot(90) sparse_strut(h=h, l=w, thick=thick, maxang=maxang, strut=strut, max_bridge=max_bridge);
|
||||
for(zs = [0:1:zreps-1]) {
|
||||
for(xs = [0:1:xreps-1]) {
|
||||
for(ys = [0:1:yreps-1]) {
|
||||
translate([(xs+0.5)*xstep-xoff/2, (ys+0.5)*ystep-yoff/2, (zs+0.5)*zstep-zoff/2]) {
|
||||
zflip_copy(offset=-(zstep-strut)/2) {
|
||||
xflip_copy() {
|
||||
zrot(cross_ang) {
|
||||
down(strut/2) {
|
||||
cube([strut, cross_len, strut], center=true);
|
||||
}
|
||||
if (zreps>1) {
|
||||
back(cross_len/2) {
|
||||
zrot(-cross_ang) {
|
||||
down(strut) cube([strut, strut, zstep+strut], anchor=BOTTOM);
|
||||
}
|
||||
}
|
||||
}
|
||||
for (soff = [0:1:supp_reps-1] ) {
|
||||
yflip_copy() {
|
||||
back(soff*supp_step) {
|
||||
skew(syz=tan(supp_ang)) {
|
||||
cube([strut, strut, zstep], anchor=BOTTOM);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
xrot(90)
|
||||
fwd(h/2) {
|
||||
linear_extrude(height=l, center=true, slices=2) {
|
||||
back(wall/2) square([w, wall], center=true);
|
||||
back(wall-0.001) {
|
||||
yscale(1/tan(ang)) {
|
||||
difference() {
|
||||
zrot(45) square(w/sqrt(2), center=true);
|
||||
fwd(w/2) square(w, center=true);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
cube([w,l,h], center=true);
|
||||
}
|
||||
children();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// Module: corrugated_wall()
|
||||
//
|
||||
// Description:
|
||||
// Makes a corrugated wall which relieves contraction stress while still
|
||||
// providing support strength. Designed with 3D printing in mind.
|
||||
//
|
||||
// Usage:
|
||||
// corrugated_wall(h, l, thick, [strut], [wall]);
|
||||
//
|
||||
// Arguments:
|
||||
// h = height of strut wall.
|
||||
// l = length of strut wall.
|
||||
// thick = thickness of strut wall.
|
||||
// strut = the width of the cross-braces.
|
||||
// wall = thickness of corrugations.
|
||||
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `CENTER`
|
||||
// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#subsection-spin). Default: `0`
|
||||
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#subsection-orient). Default: `UP`
|
||||
//
|
||||
// Example: Typical Shape
|
||||
// corrugated_wall(h=50, l=100);
|
||||
// Example: Wider Strut
|
||||
// corrugated_wall(h=50, l=100, strut=8);
|
||||
// Example: Thicker Wall
|
||||
// corrugated_wall(h=50, l=100, strut=8, wall=3);
|
||||
module corrugated_wall(h=50, l=100, thick=5, strut=5, wall=2, anchor=CENTER, spin=0, orient=UP)
|
||||
{
|
||||
amplitude = (thick - wall) / 2;
|
||||
period = min(15, thick * 2);
|
||||
steps = quantup(segs(thick/2),4);
|
||||
step = period/steps;
|
||||
il = l - 2*strut + 2*step;
|
||||
size = [thick, l, h];
|
||||
attachable(anchor,spin,orient, size=size) {
|
||||
union() {
|
||||
linear_extrude(height=h-2*strut+0.1, slices=2, convexity=ceil(2*il/period), center=true) {
|
||||
polygon(
|
||||
points=concat(
|
||||
[for (y=[-il/2:step:il/2]) [amplitude*sin(y/period*360)-wall/2, y] ],
|
||||
[for (y=[il/2:-step:-il/2]) [amplitude*sin(y/period*360)+wall/2, y] ]
|
||||
)
|
||||
);
|
||||
}
|
||||
difference() {
|
||||
cube([thick, l, h], center=true);
|
||||
cube([thick+0.5, l-2*strut, h-2*strut], center=true);
|
||||
}
|
||||
}
|
||||
children();
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue