Impressive work! Looks pro. Looks like you used lat pulldown or other gym equipment weights as additional ballast. There are a ton of old machines out there that I can yank iron weights from. I wish I had my welder set up for use in our current house, I ran 100amp service to my 3 bay garage when the generator was installed but have not ran any electrical yet.. my two wall outlets run off of the kitchen GFCI circuits... Not sure how the old homeowner managed doing anything out there while his wife was using appliances.Ballast began as the old 3 pt. dirt scoops folks have in their yards for ornaments. Helped neighbor remove a heavy weight machine out of his basement and he gave me the weights. I modified the dirt scoop, clamped the weights together and welded brackets on the ends and stacked them in the scoop. Total weight is about 1100#. Cost: welding rod, paint, elec. and time!
I'm going to look around this weekend to see if anyone has a stout 54" or 60" box scraper this weekend.