My home made welding cart made from scraps.

Hey, nice work! On the tires. If I don't use solid ones, and this is proprietary too..., I fill them with foam. I have used spray rubber in some cases. That way you don't walk into the shop and find it tipped over and a dent in your quarter panel! Get an old bike tube and try shooting it in. Take the valve out and with rubber gloves on stick it back in as it expands. Got to put the correct amount in, ect. Don't want to blow it off the rim, or expand it too much and get it every where. Get the flexible stuff and it's fantastic! Hope that helps, and hopefully my cart looks half as kool, C300