Quadra 700 Mainboard in IIcx case ...

[franklyn]

What kind of thread does the screw have to mount the HDD bracket ...?

 

[franklyn]

I installed the Q650 motherboard into the cx case because of the three NuBus slots, and the Q700 motherboard is back in its original case.

... I still need to do a bit of rasp and hone on the back panel, and then paint it.

 

[killvore]

I've just received a large collection of IIcx/IIcis and machines with compatible logic boards. Both the Quadra 650 and Quadra 800 logic boards will fit in the Quadra 700 case, unmodified, and are directly compatible with the PSU. This is just a drop-in replacement. The Power Macintosh 7100 will also fit, but you will need to cut holes in the back plate to fit the different ports, so I suggest using a bombed IIcx or IIci case instead of wrecking a Q700 case.

There is a 3d printable bracket which allows you to use the "round" style speakers from the Quadra 650, Quadra 800, and Power Macintosh 7100 in the IIcx/IIci/Q700-style cases.

Mac Quadra650 Speaker Mount for Quadra 700 by Kero＇s Mac Mods | Download free STL model | Printables.com

Speaker mount for Quadra700 with 650 logic board installed | Download free 3D printable STL models

www.printables.com

Here is a 7100/80 running inside a IIci case - I can play Diablo 1 just fine!