Something like so:
$fn=$preview?$fn:180;
h = 5.25 ;
r1 = ( 73.6/2.000000 ) ;
r2 = ( r1 + 2.6000 ) ;
rotate_extrude(angle=123) {
translate([r1,0]) square([r2-r1,h]);
}
Nik
Anno domini 2021 Thu, 4 Mar 10:33:12 -0500
Gene Heskett scripsit:
> Greetings all you OpenSCAD experts;
>
> I had no trouble making a ring with this code:
>
> h = 5.25 ;
> r1 = ( 73.6/2.000000 ) ;
> r2 = ( r1 + 2.6000 ) ;
> difference() {
> cylinder( h , r2 , r2 , $fn = 180 , center = true ) ;
> cylinder( h , r1 , r1 , $fn = 180 , center = true ) ;
> }
>
> But how do I generate another 2.5mm radius cylinder but only for the
> stated degrees, like a half cylinder?
>
> The tut I'm following doesn't seem to address this.
>
> Thanks.
>
> Cheers, Gene Heskett
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