Hugo Asm wrote:

> Hi Bill,
> 
> I had to think a little, but the solution is to use torus. I've posted a
> picture to illustrate it. It's quite simple in terms of math. You need to
> bevel the corners that are sharp at the moment. By using clipped torus (so
> it's only 1/4 torus) the corners will be bevelled to fit the inversed
> cylinders.
> 
> After doing this, you will probably need 3 more cylinders to .. eeh how
> can I explain it.. oh, you will easily see and fix that little problem..
> oh it's
> difficult to explain with words.  ;o)
> 
> Regards,
> Hugo

Thanks Hugo, It worked perfectly, see p.b.i
I had to union/intersect/difference with a box, cylinder and torus
to get the shape but the result is spot on.

-- 
Bill Hails

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