In this video, I show you my process and design for building a small rock crusher without having to weld anything. This is a chain-mill style of rock pulverizer that mounts on to a small angle grinder and can reduce rocks from 1" to passing 60 mesh very quickly.
Purchasing a mini-mill like this online will cost between $200-$400 USD and I was able to build this one for $40-$70 CDN ($30-60 USD). It has the added bonus of being able to replace the steel liner pieces as they wear out, versus the expensive mills online that do not have replaceable liners and would have to be tossed out or welded to repair.
There is a detailed list of materials at the end of the video.
The angle grinder I use in this video is a 6-amp, 4.5" SKIL angle grinder that I picked up on sale at Canadian Tire for about $30.
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