Re: Cuting a sphere from a cube in stl file

rhmorrison — Thu, 25 Sep 2014 15:37:15 -0400

If it's only a cube get the dimension of the side and then do it in any 3d design program.
Otherwise use any 3d design program that can load an STL file (which is most of them) and then subtract the sphere.

In OpenSCAD:

side = 20;

difference()
{
	cube([side,side,side], true);
	sphere(r=side/3, center=true, $fn=100);
	
	translate([-side/2,0,0])
		cube([side,side*2,side*2], true);
}

The second cube is subracted to cut the cube in half so you can see that indeed the sphere has been cut out of the inside!

[attachment 41013 cubesub.png]

Cuting a sphere from a cube in stl file

znri — Thu, 25 Sep 2014 15:23:01 -0400

Hello everybody. I have a cube in a file with stl format. I want to cut a central sphere from that cube. How can I do this?