40mm Fan Adapter for Xeon Socket 603/604 Cooler

I needed a motherboard with both PCI-X and PCIe, as well as IDE, SCSI and SATA, and the ideal choice for this was an old Supermicro dual Xeon server motherboard, something that was readily available. The only problem: motherboards were easy to get, and cheap, but the Supermicro case formed part of an active cooling solution, and those were expensive.

I decided to build the server motherboard into a desktop case, the only problem being I couldn't get a cheap active 603/604 cooler for the Xeons in there. So I found some Fujikura-T 25P6487 passive coolers, used in IBM servers, and created this adapter to take a 40mm fan.

I use such a machine for “bridging the gap”. Need something to flash the firmware on a PCI-X card for that old SGI? This has me covered! What about writing a disk image to an IDE drive to resurrect an old PS2 Tool. Yep. Same for a Ultra Wide SCSI disks. Anything I can think of.

The print is in two parts, the front and back. I printed on an Ultimaker 3, requiring no supports if printed as shown:

The model was designed in BricsCAD, though the DWG should also open in AutoCAD. There are two variants of the model file, one with the holes for the screws that hold the two halves together (from which the STLs were generated), and the other without (to enable tweaks to the positions and tightness).

After printing, attach the fan to the front part (using the screws supplied with the fan), clip the two halves into the cooler, then use some spare fan screws to fasten it all together. The screws should pull the two parts to form a tight fit.

Amended (Oct 29th) to strengthen the screw holes and arms for the back part.