I saw a few of the mixers that attach to sawzalls (reciprocating saws) on youtube and decided to make my own. Their method was using a clamp, but because I want to mix in plastic bottles and dropper bottles I didn't like to use a clamp. Plus I wanted to use whatever I had in my workshop.
An old sawzall blade. Ground off the teeth and shortened it.
I took a piece of 1 1/2 inch pvc pipe and used a 1000 degree heat gun to melt the end and squeezed the end down between wooden blocks on a vice. Then drilled 2 holes in the blade, matching holes on the pvc pipe and attached them together with bolts. Drilled a retaining bolt hole on the other side so the bottle would not come out during shaking. Wrapped a bottle in bubble wrap and shoved it inside the pipe and used the retaining bolt. 30 seconds on full speed and the juice was mixed. Cost was zero other than my time.
I can take more pics if you want, but this was super simple and works great. My wife laughed when I showed the completed project to her. Picture attached. I can add more if you want.
An old sawzall blade. Ground off the teeth and shortened it.
I took a piece of 1 1/2 inch pvc pipe and used a 1000 degree heat gun to melt the end and squeezed the end down between wooden blocks on a vice. Then drilled 2 holes in the blade, matching holes on the pvc pipe and attached them together with bolts. Drilled a retaining bolt hole on the other side so the bottle would not come out during shaking. Wrapped a bottle in bubble wrap and shoved it inside the pipe and used the retaining bolt. 30 seconds on full speed and the juice was mixed. Cost was zero other than my time.
I can take more pics if you want, but this was super simple and works great. My wife laughed when I showed the completed project to her. Picture attached. I can add more if you want.