I think you are the one with the cement mixer compost sifter. Really neat and probably makes things a heck of a lot easier.
I sifted compost with a hardware cloth screen attached to a 2x4 frame one year. It was days of work.
Yes, that is me, I watched a YouTube video on converting a cement mixer into a compost sifter. When I converted my chicken run into a chicken run composting system, I had way more compost than I could ever sift manually. So, I built my own cement mixer compost sifter, but changed up the design a little bit to avoid drilling holes in the cement barrel as in the original YouTube video.
IMHO, my design is an improvement on a great idea because you don't have to drill any holes, yet it performs the same way in the sifting of the compost.
For many years, I sifted my compost manually using the old 2X4 frame with hardware cloth. It works great for sifting small amounts of compost. However, it would take me maybe 3-4 hours to sift as much compost manually as I can sift with my cement mixer compost sifter in just 15 minutes.
Another great advantage to my cement mixer compost sifter is that I have different screen inserts to swap out. I use a 1/4-inch hardware cloth for sifting really fine compost for seed starting and potting mix, a 1/2-inch hardware cloth for sifting out compost that I mix with topsoil for the raised beds, and a 1-inch by 1/2-inch wire screen on the barrel for everything else, like top mulch that I still want to screen.
I probably don't have to screen out compost for use as top mulch. But since I set up the cement mixer compost sifter in the spring and leave it set up all summer, I just have been sifting everything and tossing the larger rejects back into the chicken run for more composting action.
For anyone intestested in my setup, I'll provide a link to the thread
Harvesting my Chicken Run Compost - Black Gold!
Years ago I would buy big bags of compost at the stores in town. When I started my thread on my cement mixer compost sifter, I estimated that I was sifting out about $60 of compost per hour. I can't remember how much this cement mixer compost sift project cost me, but it was around $240. (About $200 for the cement mixer alone). All in all, I think this machine had a payback period of about 4 hours of initial run time. Now, everything I sift is just a bonus.
If you can find a good used cement mixer, that would be the way to go. I had to buy a brand new mixer because I could not find any used mixers in my area. Still, for me, it was worth the investment.