-rw-r--r-- | fanduct.scad | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/fanduct.scad b/fanduct.scad index 746f753..fa14b7a 100644 --- a/fanduct.scad +++ b/fanduct.scad | |||
@@ -1,258 +1,259 @@ | |||
1 | use <snapper.scad>; | 1 | use <snapper.scad>; |
2 | extrusion_width=.5; layer_height=.2; // print parameters | 2 | extrusion_width=.5; layer_height=.2; // print parameters |
3 | 3 | ||
4 | epsilon=.005; // for finer cuts | 4 | epsilon=.005; // for finer cuts |
5 | 5 | ||
6 | function hypothenuse(a,b) = sqrt(pow(a,2)+pow(b,2)); | 6 | function hypothenuse(a,b) = sqrt(pow(a,2)+pow(b,2)); |
7 | 7 | ||
8 | silicone_shell = 2; | 8 | silicone_shell = 2; |
9 | heater_clearance = max( | 9 | heater_clearance = max( |
10 | hypothenuse(16/2 +silicone_shell, 20-4.5 +silicone_shell),// E3D v6 | 10 | hypothenuse(16/2 +silicone_shell, 20-4.5 +silicone_shell),// E3D v6 |
11 | hypothenuse(11.5-4.5 +silicone_shell, 15.5 +silicone_shell)// E3D volcano | 11 | hypothenuse(11.5-4.5 +silicone_shell, 15.5 +silicone_shell)// E3D volcano |
12 | ); | 12 | ); |
13 | 13 | ||
14 | fanduct_elevation = 3; // fanduct elevation above nozzle tip | 14 | fanduct_elevation = 3; // fanduct elevation above nozzle tip |
15 | fanduct_blowtarget = -2; // what to blow at | 15 | fanduct_blowtarget = -2; // what to blow at |
16 | fanduct_h = 6; // inner height of the duct | 16 | fanduct_h = 6; // inner height of the duct |
17 | fanduct_w = 7; // inner width of the duct | 17 | fanduct_w = 7; // inner width of the duct |
18 | fanduct_shell=1.2; // shell thickness | 18 | fanduct_shell=1.2; // shell thickness |
19 | fanduct_ir = heater_clearance+5; // inner radius | 19 | fanduct_ir = heater_clearance+5; // inner radius |
20 | 20 | ||
21 | jet_angle = 60-2; // angular width of the jet | 21 | jet_angle = 60-2; // angular width of the jet |
22 | 22 | ||
23 | inlet_w = 12.5; // inlet width | 23 | inlet_w = 12.5; // inlet width |
24 | inlet_h = 17; // inlet height | 24 | inlet_h = 17; // inlet height |
25 | inlet_l = 7; // inlet length of protrusion (or depth of intrusion:)) | 25 | inlet_l = 7; // inlet length of protrusion (or depth of intrusion:)) |
26 | inlet_away = 15;// how far away inlet is | 26 | inlet_away = 15;// how far away inlet is |
27 | 27 | ||
28 | hotend_clearance = heater_clearance; | 28 | hotend_clearance = heater_clearance; |
29 | 29 | ||
30 | snapper_d = 8; snapper_overlap=0.2;// snip snap | 30 | snapper_d = 8; snapper_overlap=0.2;// snip snap |
31 | 31 | ||
32 | smooth_f = 120; | 32 | smooth_f = 120; |
33 | 33 | ||
34 | type="3jets"; // "3jets" ; // circular|3jets | 34 | type="3jets"; // "3jets" ; // circular|3jets |
35 | ductshape="square"; // square|round | 35 | ductshape="square"; // square|round |
36 | 36 | ||
37 | 37 | ||
38 | module fanduct(type=type,ductshape=ductshape) { | 38 | module fanduct(type=type,ductshape=ductshape) { |
39 | 39 | ||
40 | // ***duct is all around! | 40 | // ***duct is all around! |
41 | module duct(what) { | 41 | module duct(what) { |
42 | if(what=="in") { | 42 | if(what=="in") { |
43 | sh = fanduct_w+2*fanduct_shell; sv = fanduct_h+2*fanduct_shell; | 43 | sh = fanduct_w+2*fanduct_shell; sv = fanduct_h+2*fanduct_shell; |
44 | smax = max(sh,sv); | 44 | smax = max(sh,sv); |
45 | rotate_extrude($fn=smooth_f) | 45 | rotate_extrude($fn=smooth_f) |
46 | if(ductshape=="round") | 46 | if(ductshape=="round") |
47 | translate([sh/2+fanduct_ir,sv/2]) | 47 | translate([sh/2+fanduct_ir,sv/2]) |
48 | scale([sh/smax,sv/smax]) | 48 | scale([sh/smax,sv/smax]) |
49 | circle(d=smax,$fn=4*smax); | 49 | circle(d=smax,$fn=4*smax); |
50 | else if(ductshape=="square") | 50 | else if(ductshape=="square") |
51 | translate([fanduct_ir,0]) | 51 | translate([fanduct_ir,0]) |
52 | square([sh,sv]); | 52 | square([sh,sv]); |
53 | }else if(what=="out") { | 53 | }else if(what=="out") { |
54 | sh = fanduct_w; sv = fanduct_h; | 54 | sh = fanduct_w; sv = fanduct_h; |
55 | smax = max(sh,sv); | 55 | smax = max(sh,sv); |
56 | rotate_extrude($fn=smooth_f) | 56 | rotate_extrude($fn=smooth_f) |
57 | if(ductshape=="round") | 57 | if(ductshape=="round") |
58 | translate([sh/2+fanduct_shell+fanduct_ir,sv/2+fanduct_shell]) | 58 | translate([sh/2+fanduct_shell+fanduct_ir,sv/2+fanduct_shell]) |
59 | scale([sh/smax,sv/smax]) | 59 | scale([sh/smax,sv/smax]) |
60 | circle(d=smax,$fn=4*smax); | 60 | circle(d=smax,$fn=4*smax); |
61 | else if(ductshape=="square") | 61 | else if(ductshape=="square") |
62 | translate([fanduct_ir+fanduct_shell,fanduct_shell]) | 62 | translate([fanduct_ir+fanduct_shell,fanduct_shell]) |
63 | union() { | 63 | union() { |
64 | square([fanduct_w,fanduct_h/2]); | 64 | square([sh,sv/2]); |
65 | translate([fanduct_w/2,fanduct_h-fanduct_w/2]) | 65 | translate([sh/2,sv/2]) |
66 | rotate([0,0,90]) circle(d=fanduct_w,$fn=36); | 66 | scale([sh/smax,sv/smax]) |
67 | circle(d=smax,$fn=36); | ||
67 | } | 68 | } |
68 | } | 69 | } |
69 | } | 70 | } |
70 | 71 | ||
71 | // ***bumps for easier position adjustments in line with hotend | 72 | // ***bumps for easier position adjustments in line with hotend |
72 | module marks(what) { | 73 | module marks(what) { |
73 | if(what=="in") { | 74 | if(what=="in") { |
74 | for(y=[-1,1]) | 75 | for(y=[-1,1]) |
75 | hull() for(z=[0,-fanduct_shell-fanduct_h/2]) | 76 | hull() for(z=[0,-fanduct_shell-fanduct_h/2]) |
76 | translate([0,y*(fanduct_ir+fanduct_shell+fanduct_w/2),fanduct_shell*2+fanduct_h+z]) | 77 | translate([0,y*(fanduct_ir+fanduct_shell+fanduct_w/2),fanduct_shell*2+fanduct_h+z]) |
77 | rotate([90,0,0]) { | 78 | rotate([90,0,0]) { |
78 | cylinder(r=fanduct_shell,h=fanduct_w,center=true,$fn=30); | 79 | cylinder(r=fanduct_shell,h=fanduct_w,center=true,$fn=30); |
79 | for(z=[-1,1]) translate([0,0,z*fanduct_w/2]) | 80 | for(z=[-1,1]) translate([0,0,z*fanduct_w/2]) |
80 | sphere(r=fanduct_shell,$fn=30); | 81 | sphere(r=fanduct_shell,$fn=30); |
81 | } | 82 | } |
82 | } | 83 | } |
83 | } | 84 | } |
84 | 85 | ||
85 | // ***output | 86 | // ***output |
86 | module output(what,type=type) { | 87 | module output(what,type=type) { |
87 | module guideline(xyxy) { | 88 | module guideline(xyxy) { |
88 | module pin(xy) { | 89 | module pin(xy) { |
89 | translate([xy[0],xy[1],0]) | 90 | translate([xy[0],xy[1],0]) |
90 | cylinder(d=2*extrusion_width,h=2*fanduct_shell+inlet_h,$fn=6); | 91 | cylinder(d=2*extrusion_width,h=2*fanduct_shell+inlet_h,$fn=6); |
91 | } | 92 | } |
92 | xyxyxy=concat(xyxy,[[0,0]]); | 93 | xyxyxy=concat(xyxy,[[0,0]]); |
93 | for(i=[0:1:len(xyxyxy)-2]) | 94 | for(i=[0:1:len(xyxyxy)-2]) |
94 | hull() for(j=[i,i+1]) pin(xyxyxy[j]); | 95 | hull() for(j=[i,i+1]) pin(xyxyxy[j]); |
95 | } | 96 | } |
96 | 97 | ||
97 | module circus(what) { | 98 | module circus(what) { |
98 | if(what=="in") { | 99 | if(what=="in") { |
99 | difference() { | 100 | difference() { |
100 | rotate_extrude($fn=smooth_f) | 101 | rotate_extrude($fn=smooth_f) |
101 | polygon([ | 102 | polygon([ |
102 | [0,-fanduct_elevation+fanduct_blowtarget+epsilon], | 103 | [0,-fanduct_elevation+fanduct_blowtarget+epsilon], |
103 | [fanduct_ir+fanduct_shell,fanduct_shell+fanduct_h/2], | 104 | [fanduct_ir+fanduct_shell,fanduct_shell+fanduct_h/2], |
104 | [fanduct_ir+fanduct_shell+fanduct_w/2,0], | 105 | [fanduct_ir+fanduct_shell+fanduct_w/2,0], |
105 | [0,-fanduct_elevation+fanduct_blowtarget-epsilon]]); | 106 | [0,-fanduct_elevation+fanduct_blowtarget-epsilon]]); |
106 | translate([0,0,-1]) | 107 | translate([0,0,-1]) |
107 | cylinder(r=hotend_clearance,h=fanduct_h+2*fanduct_shell+2,$fn=smooth_f); | 108 | cylinder(r=hotend_clearance,h=fanduct_h+2*fanduct_shell+2,$fn=smooth_f); |
108 | mirror([0,0,1]) | 109 | mirror([0,0,1]) |
109 | translate([0,0,-epsilon]) | 110 | translate([0,0,-epsilon]) |
110 | cylinder(r=fanduct_ir+fanduct_shell+1,h=fanduct_elevation+.1+2); | 111 | cylinder(r=fanduct_ir+fanduct_shell+1,h=fanduct_elevation+.1+2); |
111 | } | 112 | } |
112 | }else if(what=="out") { | 113 | }else if(what=="out") { |
113 | rotate_extrude($fn=smooth_f) | 114 | rotate_extrude($fn=smooth_f) |
114 | polygon([ | 115 | polygon([ |
115 | [0,-fanduct_elevation+fanduct_blowtarget+epsilon], | 116 | [0,-fanduct_elevation+fanduct_blowtarget+epsilon], |
116 | [fanduct_ir+fanduct_shell+1,fanduct_h/2], | 117 | [fanduct_ir+fanduct_shell+1,fanduct_h/2], |
117 | [fanduct_ir+fanduct_w/2+fanduct_shell+1,fanduct_shell], | 118 | [fanduct_ir+fanduct_w/2+fanduct_shell+1,fanduct_shell], |
118 | [0,-fanduct_elevation+fanduct_blowtarget-epsilon]]); | 119 | [0,-fanduct_elevation+fanduct_blowtarget-epsilon]]); |
119 | }else if(what=="airguides") { | 120 | }else if(what=="airguides") { |
120 | inr = fanduct_ir+fanduct_shell; our = inr+fanduct_w; | 121 | inr = fanduct_ir+fanduct_shell; our = inr+fanduct_w; |
121 | union() { | 122 | union() { |
122 | for(my=[0,1]) mirror([0,my,0]) { | 123 | for(my=[0,1]) mirror([0,my,0]) { |
123 | guideline([ | 124 | guideline([ |
124 | [-our,inlet_w/6], | 125 | [-our,inlet_w/6], |
125 | [-inr*sin(60),inr*cos(60)] | 126 | [-inr*sin(60),inr*cos(60)] |
126 | ]); | 127 | ]); |
127 | a0=30; as=15; a1=180; | 128 | a0=30; as=15; a1=180; |
128 | for(a=[a0+as:as:a1]) { | 129 | for(a=[a0+as:as:a1]) { |
129 | f = as/(a1-a+as); | 130 | f = as/(a1-a+as); |
130 | rotate([0,0,a]) guideline([[-inr-fanduct_w*f,0]]); | 131 | rotate([0,0,a]) guideline([[-inr-fanduct_w*f,0]]); |
131 | } | 132 | } |
132 | guideline([ | 133 | guideline([ |
133 | [-our+fanduct_w*cos(30)*3/4,fanduct_w*sin(30)*3/4], | 134 | [-our+fanduct_w*cos(30)*3/4,fanduct_w*sin(30)*3/4], |
134 | [-inr*cos(10),inr*sin(10)] | 135 | [-inr*cos(10),inr*sin(10)] |
135 | ]); | 136 | ]); |
136 | } | 137 | } |
137 | }/*union*/ | 138 | }/*union*/ |
138 | }/*airguides*/ | 139 | }/*airguides*/ |
139 | } | 140 | } |
140 | 141 | ||
141 | module jets(what) { | 142 | module jets(what) { |
142 | od = fanduct_h/2+fanduct_shell; | 143 | od = fanduct_h/2+fanduct_shell; |
143 | md = fanduct_ir+fanduct_shell+fanduct_w/2; | 144 | md = fanduct_ir+fanduct_shell+fanduct_w/2; |
144 | jww = 2*md*sin(jet_angle/2); | 145 | jww = 2*md*sin(jet_angle/2); |
145 | render(convexity=8) difference() { | 146 | render(convexity=8) difference() { |
146 | for(a=[0:120:359]) rotate([0,0,a]) { | 147 | for(a=[0:120:359]) rotate([0,0,a]) { |
147 | if(what=="in") { | 148 | if(what=="in") { |
148 | hull() { | 149 | hull() { |
149 | render(convexity=4) intersection() { | 150 | render(convexity=4) intersection() { |
150 | translate([md-fanduct_shell-fanduct_w/2,-jww/2,0]) | 151 | translate([md-fanduct_shell-fanduct_w/2,-jww/2,0]) |
151 | cube(size=[fanduct_shell+fanduct_w/2,jww,od]); | 152 | cube(size=[fanduct_shell+fanduct_w/2,jww,od]); |
152 | duct(what=what); | 153 | duct(what=what); |
153 | } | 154 | } |
154 | translate([0,0,-fanduct_elevation]) sphere(r=.5); | 155 | translate([0,0,-fanduct_elevation]) sphere(r=.5); |
155 | } | 156 | } |
156 | }else if(what=="out") { | 157 | }else if(what=="out") { |
157 | hull() { | 158 | hull() { |
158 | render(convexity=4) intersection() { | 159 | render(convexity=4) intersection() { |
159 | translate([md-fanduct_w/2-fanduct_shell,-jww/2+fanduct_shell,fanduct_shell]) | 160 | translate([md-fanduct_w/2-fanduct_shell,-jww/2+fanduct_shell,fanduct_shell]) |
160 | cube(size=[fanduct_w/2+fanduct_shell,jww-2*fanduct_shell,od-2*fanduct_shell]); | 161 | cube(size=[fanduct_w/2+fanduct_shell,jww-2*fanduct_shell,od-2*fanduct_shell]); |
161 | duct(what=what); | 162 | duct(what=what); |
162 | } | 163 | } |
163 | translate([0,0,-fanduct_elevation]) sphere(r=.2); | 164 | translate([0,0,-fanduct_elevation]) sphere(r=.2); |
164 | } | 165 | } |
165 | } | 166 | } |
166 | } | 167 | } |
167 | if(what=="in") { | 168 | if(what=="in") { |
168 | translate([0,0,-fanduct_elevation-2+epsilon]) | 169 | translate([0,0,-fanduct_elevation-2+epsilon]) |
169 | cylinder(r=fanduct_ir+fanduct_shell*2+fanduct_w+1,h=fanduct_elevation+2); | 170 | cylinder(r=fanduct_ir+fanduct_shell*2+fanduct_w+1,h=fanduct_elevation+2); |
170 | translate([0,0,-hotend_clearance]) | 171 | translate([0,0,-hotend_clearance]) |
171 | rotate([0,0,30]) | 172 | rotate([0,0,30]) |
172 | cylinder(r1=hotend_clearance*2,r2=0,h=hotend_clearance*2,$fn=6); | 173 | cylinder(r1=hotend_clearance*2,r2=0,h=hotend_clearance*2,$fn=6); |
173 | } | 174 | } |
174 | } | 175 | } |
175 | } | 176 | } |
176 | 177 | ||
177 | if(type=="circular") circus(what); | 178 | if(type=="circular") circus(what); |
178 | else if(type=="3jets") jets(what); | 179 | else if(type=="3jets") jets(what); |
179 | } | 180 | } |
180 | 181 | ||
181 | // ***air intake | 182 | // ***air intake |
182 | module intake(what) { | 183 | module intake(what) { |
183 | module placeit() { | 184 | module placeit() { |
184 | translate([-fanduct_ir-2*fanduct_shell-fanduct_w-inlet_away,0,fanduct_shell]) | 185 | translate([-fanduct_ir-2*fanduct_shell-fanduct_w-inlet_away,0,fanduct_shell]) |
185 | rotate([0,-90,0]) | 186 | rotate([0,-90,0]) |
186 | children(); | 187 | children(); |
187 | } | 188 | } |
188 | if(what=="in") { | 189 | if(what=="in") { |
189 | placeit() translate([0,-inlet_w/2,0]) { | 190 | placeit() translate([0,-inlet_w/2,0]) { |
190 | cube(size=[inlet_h,inlet_w,inlet_l+fanduct_shell]); | 191 | cube(size=[inlet_h,inlet_w,inlet_l+fanduct_shell]); |
191 | // supports | 192 | // supports |
192 | for(i=[-1,0,1]) | 193 | for(i=[-1,0,1]) |
193 | translate([-fanduct_shell, | 194 | translate([-fanduct_shell, |
194 | (i+1)*(inlet_w-extrusion_width)/2, | 195 | (i+1)*(inlet_w-extrusion_width)/2, |
195 | -inlet_away-fanduct_w/2]) | 196 | -inlet_away-fanduct_w/2]) |
196 | cube(size=[fanduct_shell, | 197 | cube(size=[fanduct_shell, |
197 | extrusion_width, | 198 | extrusion_width, |
198 | inlet_l+fanduct_shell+inlet_away+fanduct_w/2]); | 199 | inlet_l+fanduct_shell+inlet_away+fanduct_w/2]); |
199 | } | 200 | } |
200 | hull() { | 201 | hull() { |
201 | placeit() translate([-fanduct_shell,-inlet_w/2-fanduct_shell,0]) | 202 | placeit() translate([-fanduct_shell,-inlet_w/2-fanduct_shell,0]) |
202 | cube(size=[inlet_h+2*fanduct_shell,inlet_w+2*fanduct_shell,fanduct_shell]); | 203 | cube(size=[inlet_h+2*fanduct_shell,inlet_w+2*fanduct_shell,fanduct_shell]); |
203 | translate([-fanduct_ir-fanduct_shell-fanduct_w/2,0,0]) | 204 | translate([-fanduct_ir-fanduct_shell-fanduct_w/2,0,0]) |
204 | translate([0,-inlet_w/2-fanduct_shell/2,0]) | 205 | translate([0,-inlet_w/2-fanduct_shell/2,0]) |
205 | cube(size=[1,inlet_w+fanduct_shell,fanduct_shell*2+fanduct_h]); | 206 | cube(size=[1,inlet_w+fanduct_shell,fanduct_shell*2+fanduct_h]); |
206 | } | 207 | } |
207 | }else if(what=="out") { | 208 | }else if(what=="out") { |
208 | placeit() translate([fanduct_shell,-inlet_w/2+fanduct_shell,0]) | 209 | placeit() translate([fanduct_shell,-inlet_w/2+fanduct_shell,0]) |
209 | cube(size=[inlet_h-2*fanduct_shell,inlet_w-2*fanduct_shell,inlet_l+fanduct_shell+1]); | 210 | cube(size=[inlet_h-2*fanduct_shell,inlet_w-2*fanduct_shell,inlet_l+fanduct_shell+1]); |
210 | hull() { | 211 | hull() { |
211 | placeit() translate([fanduct_shell,-inlet_w/2+fanduct_shell,0]) | 212 | placeit() translate([fanduct_shell,-inlet_w/2+fanduct_shell,0]) |
212 | cube(size=[inlet_h-2*fanduct_shell,inlet_w-2*fanduct_shell,fanduct_shell]); | 213 | cube(size=[inlet_h-2*fanduct_shell,inlet_w-2*fanduct_shell,fanduct_shell]); |
213 | translate([-fanduct_ir-fanduct_shell-fanduct_w/2,0,fanduct_shell]) | 214 | translate([-fanduct_ir-fanduct_shell-fanduct_w/2,0,fanduct_shell]) |
214 | translate([0,-inlet_w/2+fanduct_shell,0]) | 215 | translate([0,-inlet_w/2+fanduct_shell,0]) |
215 | cube(size=[1,inlet_w-2*fanduct_shell,fanduct_h]); | 216 | cube(size=[1,inlet_w-2*fanduct_shell,fanduct_h]); |
216 | } | 217 | } |
217 | } | 218 | } |
218 | } | 219 | } |
219 | 220 | ||
220 | // ***DUCT TAILS!!! WOO-OO! (every day they're out there making duct tails…) | 221 | // ***DUCT TAILS!!! WOO-OO! (every day they're out there making duct tails…) |
221 | module tails(what) { | 222 | module tails(what) { |
222 | if(what=="in") { | 223 | if(what=="in") { |
223 | for(mx=[0,1]) mirror([mx,0,0]) | 224 | for(mx=[0,1]) mirror([mx,0,0]) |
224 | translate([fanduct_ir+fanduct_shell+fanduct_w/2,0,fanduct_shell+fanduct_h/2]) | 225 | translate([fanduct_ir+fanduct_shell+fanduct_w/2,0,fanduct_shell+fanduct_h/2]) |
225 | rotate([90,0,90]) | 226 | rotate([90,0,90]) |
226 | translate([0,0,-snapper_d/2]) | 227 | translate([0,0,-snapper_d/2]) |
227 | snapper(d=snapper_d,o=snapper_overlap,side=0,l=fanduct_h*3/2+fanduct_shell); | 228 | snapper(d=snapper_d,o=snapper_overlap,side=0,l=fanduct_h*3/2+fanduct_shell); |
228 | } | 229 | } |
229 | } | 230 | } |
230 | 231 | ||
231 | module parts(what) { | 232 | module parts(what) { |
232 | union() { | 233 | union() { |
233 | duct(what); | 234 | duct(what); |
234 | marks(what); | 235 | marks(what); |
235 | output(what); | 236 | output(what); |
236 | intake(what); | 237 | intake(what); |
237 | tails(what); | 238 | tails(what); |
238 | } | 239 | } |
239 | } | 240 | } |
240 | 241 | ||
241 | difference() { | 242 | difference() { |
242 | parts("in"); | 243 | parts("in"); |
243 | parts("out"); | 244 | parts("out"); |
244 | } | 245 | } |
245 | intersection() { | 246 | intersection() { |
246 | union() { | 247 | union() { |
247 | output("airguides"); | 248 | output("airguides"); |
248 | sphere(d=epsilon); | 249 | sphere(d=epsilon); |
249 | } | 250 | } |
250 | union() { | 251 | union() { |
251 | duct("in"); output("in"); intake("in"); | 252 | duct("in"); output("in"); intake("in"); |
252 | } | 253 | } |
253 | } | 254 | } |
254 | } | 255 | } |
255 | 256 | ||
256 | view="vcut"; // hcut|vcut|* | 257 | view="vcut"; // hcut|vcut|* |
257 | 258 | ||
258 | hinfinity=4*(fanduct_ir+fanduct_shell*2+fanduct_w+inlet_away); | 259 | hinfinity=4*(fanduct_ir+fanduct_shell*2+fanduct_w+inlet_away); |