This is what I have been working on the last two weeks, it's a huge power supply, providing 50V 82A (4kW) to supply DC power which is enough for all my DC driven machines if I'd want to connect everything to the same. It is based on four HP server PSUs, each giving 12.4V 82A, and those are all connected in series. Have a look at the details if you are interested. The primary reason why I made it this big and powerful was the fact that I have more than enough server PSUs to make it. The second reason was that I needed something more powerful for my lathe. Then I realized that I could connect my CNC to this one as well. So now I have connections for both my CNC and the lathe, and also for a desk motor which will be made for my lathe to be placed on.