> The only difference seems to be side plates... the 6U model has 2x 6U side

plates... so

> theoretically if I got 4x 3U sideplates I could split the rails into two

built frames, right

Yes, but you also need the top/bottom covers, a second power supply and
another back plate (those with the mains inlet/switch/fuse holder) to obtain
two complete A-100G3

> Is it worth trying to go through Proma overseas

> Do I have any easy options other than building them myself I figure I

could just measure

> the 6U plate's dimensions, and order 2 custom cut sidepanels from
>
>

http://www.metalsdepot.com/products/alum2.phtml page=plate&LimAcc=%20&aident
=

>
> then drill the holes myself. There shouldn't be any problem with

grounding, right Maybe

> the hole drilling isn't quite as simple as I'm making it out to be - I've

yet to get the rack or

> see how the rails mount

I'd recommend to apply the removed 6U side plate to the new one. Then you
have an exact reference for the positions of the holes. I think the bigger
problem is to get the aluminium panel in the right dimensions. Dimensional
drawings are available on ProMa's website.

> Is it worth trying to go through Proma overseas

Look at ProMa's website. They also have representatives in other countries.

As we obtain the A-100 frames ready built from our manufacturer (they order
the parts from ProMa, built the frames and add the custom made back panels,
power supply and bus boards) we do not have these parts in stock. That's why
we published the ProMa information so that customers can order directly from
ProMa.

Best wishes
Dieter Doepfer