[OpenSCAD] truncated teardrop countersink

[Whosawhatsis]

Does this look right?

rotate([0, -90, 0]) intersection() {
	union() {
		cylinder(r1 = 0, r2 = 10, h = 10);
		intersection() {
			rotate([45, 0, 45]) cube(20);
			rotate([45, 0, -45]) cube(20);
			rotate([0, -45, 0]) translate([0, -10, 0]) cube(20);
		}
	}
	cube(20, center = true);
}

On Thu, Sep 29, 2011 at 2:30 PM, Giles Bathgate
<giles.bathgate at gmail.com> wrote:
> Perhaps an inverse of the hole, and countersink can be made using 3d
> convex hull?
> and then subtract that from the block?
>
> Regards
>
> Giles
>
> On 29 September 2011 22:23, nop head <nop.head at gmail.com> wrote:
>> Anybody know how to model this?
>>
>> The hole and the counter-bore are truncated tear drops. How do I join
>> them with a 45 degree countersink that is also tear dropped?
>>
>> It would be a loft operation in CoCreate.
>>
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>>
>>
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