I was trying to build my own cart for some time, but I failed miserably. Fortunately I have discovered the R12. I'm using it as a camera cart. It can transport the full load of my WV Bora Combi car and believe me, it's a lot of equipment. On set, it saved me hours of time offloading my gear. Even when the cart is fully loaded, it is strong enough so you can lift it (when stairs are in the way). In conclusion, you can't go wrong with this cart.