I used a couple of these dollies to make rolling bases for 30 gallon galvanized trash cans. Since the crosspieces are wood I could cut them and sister them to make the dimensions larger or smaller as needed, then I put a wood block at each corner to hold the barrel in place and a square board in the center for the trash can bottom to sit on. I find that if I don’t put that last piece underneath, the bottom of the barrel bows downward under the weight of 150 pounds of feed. I’ll see if I can get a good picture tomorrow.
I bet those dollies work good for that 30-gallon trash can filled with feed. At a 150 pounds full, I would not want to try lifting the trash can to move it.
I transfer my feed from the 50 pounds bags into two 5-gallon buckets, which weight 25 pounds each when full. That makes it really easy for me to pick up and move around as needed.


But you have given me a good idea that I could use. I have a bunch of older plastic rectangular trash cans that we don't use for trash anymore...
What I have been using them for is storing my pallet wood after I break down the pallets. When full, they can get pretty heavy. I think I will try putting one of those HF dollies under a trash can and see if it works/holds without any modifications. That would really be nice to make those pallet wood storage trash cans mobile.

The older I get, the more I appreciate things with wheels on them!
We used to use all those garbage cans for trash, but now I am using them mostly for storage. They are great for pallet wood. I have some filled with 2X4's, and others filled with pallet planks. At about 3 feet tall, the 4-foot-tall pallet wood 2X4's stand up perfectly in them without falling over. Same for the pallet wood planks that I am able to remove at full length.
A little diversion as to why we have so many empty garbage cans now...
Bonus Tip on Reducing Garbage/Trash for the Landfill
Dear Wife and I have almost totally eliminated all our trash being sent to the landfill! I shred almost all our paper and cardboard products and use the shreds in the chicken coop as deep bedding. That gets tossed into the chicken run every 6 months for composting. Paper used to be the bulk of our trash.
Then we put all our metal, glass, and plastics into a recycle bag for the recycle bin. Again, lots of bulk eliminated from the trash can.
Most of our kitchen scraps, leftovers, and old food that we don't want gets fed to the chickens. So, we have eliminated almost all our "wet" garbage that used to go into the trash can. Food that I cannot feed to the chickens will end up in my pallet wood compost bins.
Over a number of years, we went from about 3 bags of garbage per week to about 2 bags per month. That was really good for us because we live out in the country and don't have garbage pickup. We have to haul our trash to the town's transfer station.
About 8 months ago, I took a close look at what little we still had as trash to be sent to the landfill. There was not much in the bags at that point. But I discovered that it could all be easily burned in our backyard fire pit. So, Dear Wife and I have an agreement that only burnable stuff will be tossed into our kitchen trash can. Mostly, it's plastic food wrapping, paper towels, an empty food container that is not recyclable, etc... but not much more.
I discovered that the large checkout bags at Menards fit perfectly into our kitchen trash can....
Now I just line the kitchen trash can with a large Menards checkout bag. When full, I take it out to the fire pit, toss some junk wood from lawn clean-ups on top of the bag, and just burn everything. I have not had to go to the transfer station in town for the past 8 months! I have not needed one trash can outside for the past 8 months!
Every once in a while, we might have something like a burned-out lightbulb or empty spray can that is non-recycable and non-burnable. We just put it in a small bag and drop it off at any one of the local big box stores that have a big garbage can outside as we go in to the store to shop.

I guess that bonus tip has little to do with pallet wood projects, per se, but it's all part of my current lifestyle in reducing personal waste on one hand and making useful stuff out of pallets (and other things) that would otherwise also be sent to the landfill. I have been burning some of the pallet wood bits and pieces, and some boards if they were broken and not useable for anything. But I just finished building two more pallet wood raised beds and a number of planters, so I think all that trash pallet wood will now be used as filler in the raised beds and planters rather than burning it.