With the release of the updated Open Benchtable (v1.1), the brackets is one of the part that has been improved.
More info here : https://openbenchtable.com/news/introducing-open-benchtable-v1-1/
These are the files you will need to replicate the new brackets.
These brackets are perfect to mount all kinds of coolers/AiO to the side of the table.
About the Open Benchtable
"The Open Benchtable Project originates from a group of DIY enthusiasts and overclockers trying to find the best possible benchtable product to use when either travelling to the likes of pc enthusiast gatherings, or looking to optimize space in their test lab.
After countless hours of design, testing, prototyping and feedback, the Open Benchtable is the ultimate portable benchtable."
More info about the Open Benchtable project : https://openbenchtable.com