I bought my HF vib tumbler in 2007. After 6 years of at least two loads a week (typically 10,000 cases per year), the lid broke. No replacements available so I bought a new bowl assembly. That spun around when the motor was turned on so I took the thing apart.
Several months of tumbling this way and the original is still running.
- I drilled a hole at the bottom of the bowl to fasten it to the base to prevent it from spinning. I used 2 nuts to lock it in place
- I replaced the center shaft with a threaded rod (10-24 I believe). Fastened it to the bottom with 2 nuts.
- Replaced the wing nut with a hand knob. Since it was a common SAE thread size, they were easy to find.
- Used 2 nuts locked together on the shaft as the base to a fender washer to hold the lid down and spread the load so it won't break in the future.
Several months of tumbling this way and the original is still running.