3 // This file can be used in two ways:
5 // A. Rectangular boxes
6 // 1. include <sealing-box.scad>
7 // 2. assign() values to (xxx these should be $ variables)
9 // $sealingbox_sz[0] (outer dimension)
10 // $sealingbox_sz[1] (outer dimension)
11 // $sealingbox_sz[2] (inner dimension)
13 // $sealingbox_floorth
18 // (origin is notional outside corner, but at level of
19 // inside of base; box extends to positive x,y,z)
21 // B. Complicated shapes, but harder work
22 // 1. Be a .m4 file and m4_include sealing-box.scad.m4
23 // 2. Define your own BoxDoShapeSomething like BoxDoShapeRect
24 // 3. Invoke BoxUseShape
25 // 4. Use the Box and Lid modules generated
30 $sealingbox_cnrrad = 10;
32 m4_define(`BoxLocals',`
33 xbox = $sealingbox_sz[0];
34 ybox = $sealingbox_sz[1];
35 zbox = $sealingbox_sz[2];
36 wall = $sealingbox_wallth;
37 floorth = $sealingbox_floorth;
38 ceilth = $sealingbox_ceilth;
39 cnrrad = $sealingbox_cnrrad;
41 xbox_lin = xbox - cnrrad*2;
42 ybox_lin = ybox - cnrrad*2;
44 innertube = 1.0 + 0.2;
50 m4_dnl Box_Part($1=transl_x,$2=transl_y, $3=rot_z,$4=mirror_xy)
51 m4_dnl $5=kind, $6=kindargs, $7=profile(profileargsargs))
52 m4_define(`Box_Part',`
53 translate([($1),($2)])
56 BoxPart_Extrude_$5($6, $7)') m4_dnl
60 m4_dnl BoxPart_Extrude_Linear(dist, `profile(...);');
61 m4_define(`BoxPart_Extrude_Linear',`
63 translate([0,0, -($1)])
64 linear_extrude(height= boxpart_d + ($1)) {
69 m4_dnl BoxPart_Extrude_Arc(x0_radius, swept_angle, `profile(...);')
70 m4_dnl arc starting at transl_x, transl_y, moving towards positive
71 m4_dnl y at first and then bending towards negative x, until
72 m4_dnl use negative x0_radius to inciate bending towards positive x
73 m4_dnl swept_angle is reached
74 m4_dnl x0_radius is the radius of the extruded part at x=0, not of the box
75 m4_define(`BoxPart_Extrude_Arc',`
76 translate([-($1),0,0])
79 linear_extrude(height=1000)
83 rotate_extrude(convexity=10, $fs=1, $fn=36)
85 translate([+($1),0,0]){
91 m4_dnl BoxDoShapeRect(`profile(profileargs)');
92 m4_define(`BoxDoShapeRect',`
93 Box_Part(0, cnrrad, 0,0, Linear,`ybox_lin', `$1' )
94 Box_Part(0, ybox-cnrrad, 0,0, Arc,`-cnrrad,90' , `$1' )
95 Box_Part(cnrrad, ybox, -90,0, Linear,`xbox_lin', `$1' )
96 Box_Part(xbox-cnrrad, ybox, -90,0, Arc,`-cnrrad,90' , `$1' )
97 Box_Part(xbox, ybox-cnrrad, -180,0, Linear,`ybox_lin', `$1' )
98 Box_Part(xbox, cnrrad, -180,0, Arc,`-cnrrad,90' , `$1' )
99 Box_Part(xbox-cnrrad, 0, -270,0, Linear,`xbox_lin', `$1' )
100 Box_Part(cnrrad, 0, -270,0, Arc,`-cnrrad,90' , `$1' )
105 module SealingBox_WallProfile(){
107 z = zbox - innertube - tubesealrad;
108 translate([0, -0.1]) square([wall, z]);
109 translate([tubesealrad, z]) circle(r=tubesealrad, $fn=20);
112 module SealingBox_FloorProfile(){
114 mirror([0,1]) square([wall, floorth]);
117 module SealingBox_LidProfile(){
119 rad = tubesealrad + innertube;
122 translate([-lidoverlap - innertube,
123 zbox - lidoverhang - innertube])
124 square([lidoverlap + innertube + wall,
125 lidoverhang + innertube + ceilth]);
127 translate([tubesealrad,
128 zbox - innertube - tubesealrad])
134 circle(r= tubesealrad + innertube, $fn=20);
140 module SealingBox_CeilProfile(){
143 square([wall*2, ceilth]);
146 // BoxDoShape(Basename,BoxDoShapeSomething)
147 // generates modules BasenameBox and BasenameLid
148 m4_define(`BoxUseShape',`
151 $2(SealingBox_WallProfile(););
152 hull(){ $2(SealingBox_FloorProfile();); }
157 $2(SealingBox_LidProfile(););
158 hull(){ $2(SealingBox_CeilProfile();); }
162 BoxUseShape(`SealingBox_Rect',`BoxDoShapeRect')