On Mon, Jan 20, 2025 2:45 PM, Roel Vanhout wrote: > I can't figure out how to apply any of the solutions in those to my > current problem, so I'm hoping someone can point me in the right > direction. Here's an example using the OpenSCAD cosine/sine intersection approach for a tube / cube interface: handle_dia = 50; handle_thickness = 10; fillet_radius=5; sigma = 0.01; module makePiece(tubedia=handle_thickness, pthick=fillet_radius, fillet_angle=0, do_fillet=false){ intersection(){ rotate_extrude(angle=180){ translate([handle_dia/2,0]) circle(d=tubedia); } if(do_fillet){ translate([0,-fillet_radius/2 + fillet_radius * sin(fillet_angle),0]) cube([handle_dia*2,pthick,handle_dia/2], center=true); } } if(!do_fillet){ translate([0,-fillet_radius/2,0]) cube([handle_dia*2,fillet_radius,handle_dia/2], center=true); } } makePiece(do_fillet=false, $fn=16); for(fang = [2:5:90], $fn=16){ makePiece( tubedia=handle_thickness + fillet_radius * (1-cos(fang)), pthick=fillet_radius + fillet_radius * (1-sin(fang)), do_fillet=true); } -- *David Eccles* Bioinformatics Research Analyst C: +64 21 262 3223 W: www.gringene.org <www.gringene.org> GrinGene Bioinformatics