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Thread: OpenSCAD making complex parts
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10-01-2021, 02:37 PM #3
Throw in an angle adjuster and you can make any curve:-)
// CA's simple curve and arch generator
$fn=50; // change to adjust roundness of arch NB: numbers between 4&20 make some interesting shapes
ca=90; // angle of curve - 180 makes an arch
ah=30; // arch height
aw=40; // arch width
at=3; //arch thickness
bt=5; //beam thickness
bw=50; // adjusts beam width - larger numbers make narrower beams
resize([aw,ah,at])rotate_extrude(angle=ca,convexity = 10) translate([bw, 0,0]) circle(d = bt);
The applications are almost endless.
Rotate the 90 degree curves around the centre and you'd get a sort of pergola effect.
I've also rotated the whole thing to sit flat on the usual plane:
// CA's simple arch and curve generator
$fn=8; // change to adjust roundness of arch NB: numbers between 4&20 make some interesting shapes
ca=90; // angle of curve
ch=0; // curve height adjuster
ah=60; // arch height
aw=40; // arch width
at=3; //arch thickness
bt=5; //beam thickness
bw=50; // adjusts beam width - larger numbers make narrower beam
module curve(){
resize([aw,ah,at])rotate_extrude(angle=ca,convexity = 10) translate([bw, 0,0]) circle(d = bt);
} // end mod curve
nps=10; //number of pergola segments
module pergola(){
rotate([90,0,0])for (i = [1:nps]) rotate([0,(360/nps)*i,0]) curve();
} // end mod pergola
pergola();
Add enough pergola sections and you can make interesting 'buildings'.
Basically it's now a fairly useful little script.
I know I'll be using it again ;-)
Oh yeah, a 2 segment pergola is an arch :-)
So no need to use the curve module.
Also using 180 curve with the pergola module makes a whole bunch of different shape arches.Last edited by curious aardvark; 10-01-2021 at 03:03 PM.
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