Product Review: Harbor Freight 3-1/2 Cubic Foot Concrete Mixer

I remember hot summer days mixing concrete with my father. I remember the two-holed hoe oozing mud like Play-Doh through a Fun Factory press. Back and forth you shoved the concrete with each hard pass plasticizing a frustratingly minor amount. The demand never ceased, more concrete was required all the time until the sun and the humidity and the sweat burning your eyes (combined with the resistance of the aggregate) lulled your body into a Zen state of denial. The only way to push on was to pretend it wasn’t happening. “I am not really here,” I’d tell myself.

“More mud!” Dumping another 80-pound bag of concrete into the wheel-buggy I quietly promised that I would never, ever, under any circumstances, become a concrete finisher.

With the $180 purchase of Harbor Freight’s 3-1/2 cubic foot concrete mixer I broke that promise made so long ago. I got mine at one of Harbor Freight’s closeouts. Or maybe it was a parking lot sale. Come to think of it, could it have been one of the 4357 tool disposals that brought my attention to the mixer? These events are held almost daily at Harbor Freight and if you ever pay full price at that store you’re no friend of mine. The mixer came out of the box in a million pieces and it took the better part of three hours to assemble the thing because I am not genetically disposed to look at directions.

I mixed about 400, 50-pound bags of concrete before the key in the larger of the two pulleys fell out. The parts landed inside the motor box so I stuck the key back onto the pinion shaft and swabbed a bit of lock tight onto the screw holding the key. I’ve since mixed another 800 bags with no further problems. In total, about 15 cubic yards of concrete have been run through the little mixer to date.

Maintenance on the HF mixer consists of lubing the drum pivots, greasing the large stamped ring gear and oiling the sealed drum bearing with whatever dregs of slippery stuff I have laying about the shed. I do all these things before each use whether I’m mixing 3 bags or 100.

The drum is sized for 150 pounds of concrete mix. Any more and the tilt angle becomes too vertical and the mixing action slows to a crawl. Depending on which size bag of pre-mix concrete is cheapest, I have mixed as high as 180 pounds in the thing but mixing performance suffered with each additional pound. These are nitpicks. I spent less than a week’s rental to own the HF mixer. I give it high marks.

It’s funny how life works out. I enjoy mixing and finishing concrete now. I love the smells and textures and the sound of a steel trowel scraping across a smooth burnished surface. These are simple motions that bring back sweet muscle-memories of working with my father and those hot summers when I was young and strong.