DIY Homemade Rock Crusher 911Metallurgist. The 911JAC12K MINI Rock Crusher is our 'most small' rock crusher for the smallest budget. It contains all the high quality precision precut and ready to weld machined parts of a small jaw crusher.
has earned its worldclass reputation for innovative research, excellence in manufacturing, and quality products due to its philosophy of putting customers needs first. Our #1 goal is making the customer more productive and profitable by providing the best impactorbased technology and aftermarket support available.