Thanks for a very informed and helpful response Lutz. I used step 2, a
linear translational sweep. But I did not do the intersection of the single
cube  rotated around the Z axis, instead I just enabled the bevel feature.
(I use a single box to make a cut out in the middle of my base.) The problem
is that I can't seem to see how to control the angle of the bevel once I
scale the sweep to a full rectangle. Is your interesecting cube idea a way
around that, or can I adjust those control points to get the bevel the way I
want it?

#declare new_base = object {
  new_base_Raw
  material {
    pop_wood
  }
  scale <-264.636932, -341.753265, -41.044865>
  rotate -180.0*z
  translate  <-15.146989, 34.915226, -50.417278>
}
difference { // bevel_base
  object { new_base }
  box { // base_cutout
    <-1, -1, -1>, <1, 1, 1>
    material {
      pop_wood
    }
    scale <243.20993, 308.392822, 14.846091>
    translate  <-11.067964, 36.703621, -56.991131>
  }
}



"Lutz Kretzschmar" <lut### [at] stmuccom> wrote in message
news:j10g4uoti6i4qk9mdb2ncav3s2jv0ijost@4ax.com...
> Hi Mitchell Waite, you recently wrote in moray.win:
>
> > I would like to put a 45 degree bevel on the edges of my box.
> There's a number of ways.
>
> You could intersect four cubes. One as the base, the other three
> rotated by 45 degrees, each around a different axis. Those three
> should be scaled a bit in the axis around which they're rotated to
> avoid coincident surface problems...
>
> You could make a linear translational sweep and use the Bevel slider
> and then intersect that with a single cube rotated around Z to bevel
> the four vertical edges.
>
> You could use a difference to cut the 12 edges off a cube by using 12
> cubes rotated and placed accordingly. Not very efficient.
>
> - Lutz
>   email : lut### [at] stmuccom
>   Web   : http://www.stmuc.com/moray

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