This will adapt from a printer which uses the Mightyboard (not positive of version compatibility, but I think they all use the same mounting holes) to mount a range of LPC1768-based 32 bit Chinese boards (SKR 1.1, SKR 1.3, MKS Gen L etc) which all use the same bolt pattern.
This has only been tested on a Qidi Tech 1 (which is basically a rebranded FlashForge Creator Pro) with an SKR 1.3. Should work with a broad range of Makerbot/Flashforge style printers (let me know if it doesn't!). Maintains use of stock standoffs and screws.
The adapter also provides mounting points for a 12v-24v NCEP01T18T MOSFET (highly recommended for safety), as well as a LM2596 buck converter (for powering LEDs, Raspberry Pi etc). Maintains adequate space for the stock cooling fan.
Allows for wires to be routed under the mount for a tidy installation.
FYI you will likely need to install almost all new connectors and reroute/trim nearly all of your wires to move to one of these boards (this adapter will simply mount it to your chassis). I'm working on a Youtube video to help document this, which I'll share soon.
Credit: this was inspired by sendel's SKR mount, I started off wanting more space between the case & board, as well as a stiffer platform. http://www.thingiverse.com/thing:3370728
PETG or ABS recommended, but PLA will probably suffice
3-4 perimeters recommended