Looked at a lot of DIY dumbbell carts online, and this is what I came up with. Worked great, although the actual craftsmanship is a bit spotty since I built it. I put wheels on with the idea I could roll it, but it got a little sketchy/wobbly with 400lbs on it, so I mostly leave it in place. Recently I found a used Rogue power block cart, so this has since been retired.
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