Good news (some) from the acrylic sphere supplier.
Yes I can have 350mm acrylic spheres with the opposing ends cut off for the bipolar drivers. They won't be able to do any thicker than 4mm wall thickness but that should be ok as it's a sphere and the holes in the two ends are small compared to the sphere diameter. The other bad news was they can't supply in black, only clear or opal (cloudy).
So, I either get opal and put some coloured LED's inside
![Laughing :lol:](./images/smilies/icon/lol.gif)
or paint them with acrylic paint. Paint the insides or outside ?
The price inc cutting the ends off seems reasonable so I am putting together an email with what I want and a pencil drawing or two. Exciting
![Dance :dance:](./images/smilies/eusa/dance.gif)